On the day of his execution, Ronnie Seebok recalls the events that lead up to him being condemned to death row as Hanson tries to convince him to appear in a film to deter youth in his old neighborhood from a life of crime.
Penhall and Hanson link up with a CIA operative on their extremely dangerous quest to find Penhall's wife in war-torn El Salvador.
The aftermath following the murder of a high school teacher's wife is shown from the perspective of the student who was hired to kill her, while Hanson and Penhall work undercover at the school to solve the case.
Hanson becomes trapped in a private drug clinic where he had himself placed without Captain Fuller's knowledge in order to investigate claims of patient abuse made by Kenny Weckerle, the kid he busted on drug charges in the pilot episode.
Donning their McQuaid brother aliases for one last time to ferret out a high school thief, Penhall suspects a 22-year-old student who is faking his age for unexpected reasons, while Hanson befriends a teenage girl who has kidnapped her baby sister. Penhall adjusts to his role as Clavo's guardian.
While attempting to track down a serial arsonist at a high school during Halloween season, the Jump Street team becomes thoroughly spooked following the accurate premonitions of a self-proclaimed teenage psychic.
Hanson and his girlfriend walk in on a convenience store robbery that results in her tragic death. He enters an emotional and psychological tailspin when the security camera tape reveals he had 3.3 seconds during which he could have prevented the shooting.
Doug has a near death experience after being shot protecting a college deejay about to testify against the mob, forcing him to contemplate his future. Meanwhile, Hoffs and McCann seek justice by posing as college radio station employees to build evidence of the mob's payola shakedown.
Hoffs enrolls in a teen modeling school after several of its graduates end up appearing in pornography. Fuller tries to adjust to his sixteen year old son's new Rastafari lifestyle.
Hoffs is date-raped by a classmate while investigating a drug ring at a prestigious medical school. The rest of the Jump Street team rallies around her to help bring the perpetrator, who claims she seduced him, to justice.
The Jump Street program faces a summer deactivation that could become permanent. Meanwhile, Hanson discovers a kid living in a school boiler room while undercover to find a toilet bomber, Hoffs is offered a job in media relations, and Dorothy tries to force Penhall to grow up.
Fuller is hesitant to let a handicapped policewoman accompany Hoffs undercover to catch a rapist who targets disabled college women.
Hanson who is out to catch a loan shark finds his cover threatened when his high school quiz team makes it to the semi finals which are to be broadcast on TV. Penhall tries to win the heart of his attractive neighbor by babysitting her infant.
Hanson and Penhall find a way to get out of the cold while remaining on the job as they trail a communist radical suspected of bombing a school newspaper to Florida during spring break.
Penhall and his partner in Intelligence are promoted to the Major Crimes Unit after a major bust, but their hubris results in a grievous error that ruins the life of a popular sports writer accused by his vindictive ex-wife of molesting their four year old daughter. Hanson goes on a date with an Assistant District Attorney as a favor to Penhall.moreless
Penhall refuses to reconcile with his younger brother Joey, who's been estranged for five years, after learning he has become a cop and has been assigned to Jump Street. On his first undercover assignment to rescue a girl from a cult that prays on abused teens, Joey finds himself in need of rescue after falling victim to their brainwashing techniques.moreless
Hoffs and Garrett go undercover to build a case against a massage parlor suspected of hosting underage prostitution, only to discover the girl in charge is an undercover DEA agent.
Mac's investigation of a car theft ring erroneously points to a reformed teenage car stripper Hoffs has been mentoring. While Hoffs tries to assure Mac the kid is remaining on the straight and narrow, she's unaware the thieves are putting heavy pressure on him to join their operation.
Booker has a revelation about Officer Tower's shooting and puts his career on the line to prove Hanson's innocence. Ioki remains comatose.
Hanson, Penhall, and Ioki go undercover to stop a group of spoiled rich kids who burglarize houses, toy with poorly-trained private security officers, and engage in reckless activities for kicks. Ioki's flashbacks begin to affect his work.
Rookie officers Garrett and Rocky perceive their inaugural high school undercover assignment as an opportunity to make amends for the mistakes they made during their own school years, but both are forced to relive bad memories when Garrett's estranged brother shows up and Rocky suspects a teacher is hitting on her. Meanwhile, Hoffs goes house hunting.moreless
A gang member is gunned down in a drive-by shooting while her young daughter and Hoffs look on. Hoffs gets permission to infiltrate the gang to find the killer on the condition she also gathers evidence against an affiliated gang member suspected of being a gun runner.
Hanson goes on the lam after learning he's the lead suspect in Officer Tower's death, while Booker teams up with Officer Tower's partner to conduct the official investigation into the shooting and locate Hanson.
When Hanson's girlfriend spreads word through City Hall that Jump Street is about to bust the newly-elected mayor's son for being a major drug dealer, Fuller ends up with a 30 day suspension for hesitating to call off the investigation. A new girl in Ioki's life results in Penhall becoming homeless.moreless
Penhall abandons Ioki during a stakeout when he learns that Clavo has been taken to the hospital. As punishment, he is assigned to foot patrol in a precinct full of dirty cops and partners with rookie officer Dean Garrett, who the other cops suspect of being an IAD plant.
While investigating the gang rape of a jogger, Hoffs, Hanson and Penhall find themselves at the mercy of the same group of student suspects, who try to instigate a riot while a school is cut off from the outside world during a storm.
While Hanson and Penhall are assigned to keep watch over a troublesome star during a film shoot, Waxer Thompson escapes custody after a prison bus accident and seeks revenge on Hanson.
Ioki is forced to revisit painful memories from three years earlier when he is held at gunpoint by a young man whose life was left in shambles after Ioki convinced him to turn in his drug abusing parents.
Blowfish talks Penhall into becoming his son's Little League coach. He soon discovers that the team's best player, who has befriended Clavo, is pictured on a milk carton as a kidnapping victim.
During the investigation of a series of beatings at a college sports bar, Hanson and Penhall uncover a major bookmaking operation. Hoffs, Ioki and Penhall take the detectives' exam.
Ioki is badly injured in a drive-by shooting while investigating a simmering gang war, and Hanson's clandestine investigation into the shooting turns up a crooked cop selling arms to the rival gangs.
Investigating the murder of a popular female teacher and environmental activist, Hoffs befriends a sexually-confused student who may have witnessed the act; A young teaching-intern's attempted seduction of Fuller, who's posing as a sex education teacher, sends him into a mid-life crisis.
Hoffs goes undercover as a pregnant teen to investigate threats of violence being made to a family planning center by anti-abortionists. Booker's attempt to improve Blowfish's self-esteem backfires.
Following their thwarting of an "assassination" attempt of a senator giving a speech at a high school, each Jump Street cop (plus Blowfish) relates his or her own Hollywood-inspired version of the events to a reporter interested in turning the story into a movie script.
On a long-term stakeout at a vacant house to gather evidence on a family living across the street suspected of running a burglary ring, Hoffs becomes preoccupied with the welfare of the family living in the neighboring house, who she suspects is living in an abusive situation. Fuller opens up to Hoffs about a dark family secret.moreless
The murder of a high school student is witnessed by the mentally handicapped student he was partnered with in a program to mainstream disabled youth. Officer Anthony "Mac" McCann is assigned to become the young man's new partner in an attempt to get him to open up about what he saw, while Penhall and Hoffs attempt to break the ice with their new, standoffish colleague.moreless
Hanson gets suspended following the publication for an errror-riddled exposé about the Jump Street program written by his old high school friend Russell Buckins. Desperate to clear his name, Tom tracks down Buckins at a wedding where he's gathering dirt for an exposé on the groom and trying to steal the affluent bride.moreless
While undercover investigating a drive-by shooting death of a student at a chaotic crime-infested school, Pennhall and Hoffs begin to question the tactics being used by the new principal to bring order to the student body.
Investigating the brutal assaults of several transients, Fuller poses as a bum while Mac infiltrates a high school satanic cult whose leader has enthralled a classmate with her beauty.
Mac is sent on an emotional roller coaster as he tries to rekindle his relationship with his ex-fiancee while juggling his assignment from the FBI to date the teenage daughter of a ruthless drug trafficker.
Hoffs faces a $250,000 civil suit when the target of a prostitution sting accuses her of entrapment and hires the vindictive ex-wife of her new boyfriend as his lawyer. Her defense hinges on Mac convincing a teenage prostitute to testify as a witness.
Hoffs and Ioki find their professionalism tested when they are assigned to infiltrate a protest group suspected of killing the leader of a Neo-Nazi organization, while Penhall poses as a Nazi to determine if the new leader is planning a violent reprisal.
Doug and Joey go undercover at a wilderness survival camp for troubled teens to investigate a wealthy businessman's accusation that his son's seemingly accidental death was in fact the result of abuse inflicted by the counselor who runs the camp.
Hanson is sent in undercover at Lincoln High, a school that has been on the verge of racial violence since a black principal came in and a quarter of the school's population is now black. Meanwhile, Penhall tries his hand at stand-up comedy.
A recent high school valedictorian is killed during his getaway after holding up a convenience store. The Jump Street cops are sent in to the nearby college to investigate the claim from the dead student's roommate that they were both blackmailed after buying term papers from a local store.
McCann shows up the rest of the police force by quickly finding the missing daughter of a local television reporter, but takes on a much more difficult task as he tries to unravel the murder mystery that caused her to run away.
A group of over-achieving college students are suspected of using the chemistry lab to create synthetic heroin and testing it on unsuspecting junkies; Ioki helps a Chinese student who is being threatened by a government operative for being linked to the Tiananmen Square protests; Hoffs is dogged by an unwanted suitor.moreless
Fifty years in the future, a young cop hoping to revive the Jump Street program interviews the retired officers who were there when it all started.
The Jump Street unit discovers that a boy who was being used as a pawn by his feuding parents faked his kidnapping with the aid of his grandfather to get away from his parents. Hoffs tries to get to the bottom of her parents' separation.
A high school that has just voted to institute a universal drug test to combat a homemade Ecstasy problem nets a number of unlikely suspects, including an undercover Hoffs. While she tries to repair her professional reputation, McCann is sent in to investigate the chemistry prodigy who organized the vote.
A star high school quarterback dies during a game from a heart attack. Mac is sent in to uncover a suspected drug ring, but instead follows the lead of a teammate / environmental activist who believes the illegal dumping of hazardous waste into a nearby stream is responsible for the death.moreless
A public school in a small religious town reports the burning of its biology books. Hanson is sent into the classroom of a well-respected science teacher who has suddenly become adamant about teaching creationism following his son's near-death experience.
Hanson and Penhall are condemned to repeat academy training when Hanson's grievous error while undercover as a street racer results in serious injuries to a hit-and-run suspect. Sensing his life is at a crossroads, Hanson instead leaves town with a free-spirited high school friend to pursue an old flame who's about to get married.moreless
Penhall falls for a headstrong narcotics officer Fuller has assigned to investigate a high school heroin dealer, and is hesitant to acknowledge the consequences of the unsanctioned techniques she uses to earn the trust of her targets.
Mac and Joey's investigation of a string of home burglaries in a primarily elderly neighborhood turns up the son of Fuller's new girlfriend as the lead suspect.
In lieu of desk duty, Joey agrees to help care for a drug-addicted neo-natal baby as part of an experimental program to balance the psychological effects of killing a suspect. Despite his initial reluctance to take part, he quickly develops an obsession with the child's well-being that unintentionally puts it at risk.moreless
Having failed to bring down Crane on his own, Books enlists the help of his former Jump Street colleagues to pose as bikers to find proof Crane was responsible for the death of Mickey Maxwell.
Fuller suspects the vicious beating death of a teacher / boxing coach was the result of an extortion racket run by his students and poses as the teacher's replacement. However, his bottled-up grief over the death of a long time friend and colleague jeopardizes his safety and the investigation.
Hoffs, Mac, and Joey are given the formidable task of building a case against a rapist who is the son of a wealthy lawyer, has an air-tight alibi, and committed the crime on a campus that has no record of the incident ever being reported.
Hoffs regrets not pressing charges against two decorated gang-unit officers responsible for the racially-charged harassment of two of her friends when they later, along with two other officers, severely beat them without provocation.
Suspecting the murder of a motorcycle enthusiast is linked to the corrupt businessman Raymond Crane, who was also behind the framing of Officer Hanson and near-fatal shooting of Officer Ioki, Booker uses blackmail to gain entry into Crane's organization, where he hopes to gather the evidence needed to finally bring Crane to justice.moreless