The housemates are back at the Jersey Shore for another season of GTL, fist-pumping, and battling grenades, this time with a new addition to the house.
Leftover tension from Miami spills over to Seaside when unresolved issues among the girls explode on the first night. And new roommate Deena gets off to an interesting start when she "accidentally" gets naked in front of The Situation.
The fight between Sammi and JWOWW causes tension in the house. Ronnie and Sammi continue to isolate themselves, missing the first family dinner. And when Ronnie decides to hang out and have fun with the rest of the house, Sammi feels all alone.
Sammi decides to make peace with Snooki and Deena. JWOWW runs into her old flame Roger and sparks fly. And Snooki gets arrested for public intoxication.
After Snooki is arrested, she becomes depressed -- until she meets a new guy. Deena meets Ronnie's stunt double. Meanwhile, JWOWW's relationship with Tom comes to an end.
Ronnie and JWOWW make up, leading to Sammi punching Ronnie in the face. Vinny picks up a girl with an overbearing family. And The Situation learns Deena's dirty little secret.
Ronnie's over-drinking causes some painful side effects. Snooki meets a guy who may or may not be engaged. And Pauly D makes peace with an old nemesis.
Ronnie and Sammi's tumultuous relationship comes to an end. When Ronnie destroys everything Sammi owns, she must decide whether or not to leave the shore.
After Sammi leaves the house, Ronnie is an emotional wreck. With the girls taking Sammi's side and the guys not knowing how to cheer him up, Ronnie feels like he has no friends left in the house. Meanwhile, The Situation tries to hook up with Pauly D's ex-girlfriend.
Snooki's summer of hookups comes back to haunt her. The Situation pulls the ultimate prank on Deena and Snooki. But the rest of the guys have the last laugh when they ditch The Situation for taking too long to get ready for dinner.
Sammi's return to the shore house leaves Ronnie at a loss for words. Snooki's feelings for Vinny continue to deepen. The Situation hooks up with a girl who he's convinced smells like cheese but doesn't realize he's been pranked in a major way.
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.
The Situation continues to instigate drama between Ronnie and Sammi, and Snooki has a falling out with Vinny.
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.
The Reunion: Snooki and Vinny define their relationship, JWoww tells us how she really feels about Roger, Deena clears up some rumors and Sammi and Ronnie talk about why they just couldn't make it work.