The housemates reunite to talk about the hook-ups, break-ups and drama that filled their summer in Seaside.
The roommates say goodbye to another summer at the Jersey Shore. While one couple reaches a crossroads in their relationship, another couple makes it official.
Mike continues to bring about drama between Ronnie and Sammi. Snooki has an argument with a drunken Vinny.
Vinny and Pauly D take a road trip to Staten Island. Roger becomes more than just a rebound for JWOWW. The Situation reveals Sammi's shady ways, causing Ronnie to question his love for her.
Sammi's return to the shore house puts Ronnie at a loss for words. Snooki's feelings for Vinny persist. The Situation gets with a girl who he's convinced smells similar to cheese, but doesn't recognize he's been pranked in a major way.
Snooki's summer of hookups comes back to trouble her. The Situation pulls a huge prank on Deena and Snooki. But the other guys have the final laugh when they ditch The Situation for taking his time getting ready for dinner.
With the girls upset that Ronnie's temper forced Sammi to flee the house, Ronnie feels alienated. The guys try to cheer him up, and The Situation makes a play for Pauley D's ex.
Ronnie and Sammi's chaotic relationship comes to a conclusion. When Ronnie demolishes all of Sammi's things, she has to make a decision whether or not to leave the Jersey Shore.
Ronnie's excessive drinking causes painful side effects. Snooki meets a guy who might be engaged. Pauly D makes peace with an old nemesis.
Ronnie and JWOWW are friends again, leading to Sammi punching Ronnie in the face. Vinny picks up a girl with an over-protective family. The Situation learns Deena's dirty little secret at the barber shop.
After Snooki is arrested, she becomes miserable. That is until she meets a new guy. Deena meets Ronnie's stunt double. Meanwhile, JWOWW's relationship with Tom ends.
Sammi decides to make up with Snooki and Deena. JWOWW runs into her old boyfriend Roger and sparks fly. Snooki runs into trouble and gets arrested for public intoxication.
The altercation between Sammi and JWOWW causes tension in the house. Ronnie and Sammi keep isolating themselves, missing the first Sunday family dinner. When Ronnie decides to chill and have fun with the rest of the house, Sammi feels neglected.
Things quickly return to form as the cast returns to Seaside, NJ in the season premiere. Angelina's replacement, Deena, does a strip tease for The Situation and starts a brawl.