Sketches include: Dad Academy starring C-zar, PubLizity babysits Liz's neice Denise, and an interview for a nanny position is actually a prank.
Principal Perry is in danger and the Lab Rats are at risk of exposing their powers to her and Davenport's business is ruined.
Bob doesn't care when Linda announces she's taking seaplane flying lessons but that soon changes when he finds out the instructor, nicknamed "Upskirt Kurt", is a notorious womanizer with a reputation for seducing married women.moreless
Adam is tired of not having time off from training, so Eddie convinces him and Leo to make a clone of Adam. Things go awry when the clones self duplicate.
When Marcus kidnaps Davenport, the team must try and rescue him which leads to a battle of bionic teenagers. The Shadowy figure reveals he is the Lab Rat's biological father.
In the second part of the season finale, Li'l Gideon has managed to take possession of the Mystery Shack and unless the Pines family can somehow reacquire it, the fate of their beloved tourist trap is doomed.moreless
Leo and Chase perform magic for the talent show while Bree watches Adam and her boyfriend, Owen, create butter art.
When Marcus catches Leo in his evil liar, Leo must find a way to escape and inform the team of the secret lab.
It's Leo's birthday and he soon becomes depressed when he discovers his parents aren't giving him a surprise party. The rats decide to throw one for him but get caught up in the party themselves.moreless
Mabel finds out her favorite boy band is a bunch of trapped clones and tries to free them. Meanwhile Dipper is convinced that Robbie is trying to brainwash Wendy with a secret message hidden in one of his songs.moreless
When Mabel befriends a cute merman trapped in the public pool, she's determined to help him out.
When the team is trapped in detention, Leo fills in to help Eddie and Davenport stop a toxic gas leak.
When Wagstaff Middle School becomes the target for a serial deuce dropper, Tina vows to investigate and unmask the identity of the "Mad Pooper".
Jack tries to avoid his mother. Meanwhile, Jenna starts to envy Liz and her married life.
The boys form a band with the new kid, Marcus, who for some reason destroys his own guitar and blames it on Leo. Meanwhile, Bree tries to bond with Davenport as father and daughter.moreless
When Leo is helping in the lab, he lowers the internet firewall allowing a computer virus to infect Eddy turning him into Teddy who reigns havoc during Bree's slumber party.
Tired of being a wimp, Dipper wants to be a real man and meets a manotaur who can help. Dipper does the manotaurs' challenges to prove what he's got to be a real man. Meanwhile, Mabel teaches Grunkle Stan how to become more a gentleman for his love interest, Lazy Susan, the waitress at their local diner.moreless
The rats discover they can earn allowances by doing chores and become obsessed with money and sell items in the house including an heirloom of Tasha.
The gang decide to visit a show starring Lil' Gideon, a psychic kid and Grunkle Stan's competitor, where he demonstrates his psychic powers. He falls in love with Mabel and invites her to meet him. She refuses to go, but also doesn't want to break his heart. But when Dipper persuades Mabel to go on a date with Gideon to question his genuineness, she soon learns he will lose his cuteness too quickly.moreless
When the kids are left alone, Leo unknowingly activates a device that glitches all technology including the rat's bionics. While trying to track Bree, Chase mistakenly crashes Davenport's G.P.S. drone.
Dipper and Mabel must use their best sleuthing skills to uncover who is behind the sinister events after the discovery of a hidden room reunites the Mystery Shack with its long forgotten collection of wax figures.moreless
Dipper and Mabel enlist Soos to help them prove a lake monster is real.