The roommates return from Italy and couldn't be more excited to get back to the Jersey Shore. But a drama storm is brewing as Mike threatens to destroy Snooki's relationship with Jionni.
Vinny weighs his options - stay at the Jersey Shore house or head home to Staten Island. Snooki fights with Jionni and the roommates are back to their usual antics - partying and tanning to the extreme.
The roommates struggle to adjust to life at the Shore without Vinny, while Mike confronts his own internal demons. But it's also Pauly's birthday and he gets the best present of his life!
Mike returns only to find out that Danny has threatened to get new roommates! The girls hire strippers for Pauly and Mike's wild birthday party. The roomies go to Staten Island to kidnap Vinny. But will he go back with them?
The Situation secretly gathers information to bring down one of his roommates, and for once it isn't Snooki. JWoww is freaking out because Roger has disappeared and won't return her calls.
The cast tries to avoid a shark attack when they go fishing. Jenni confronts Pauly's stalker. Snooki sets her sights on Vinny when her boyfriend rejects her affections.
Mike decides he can wait no longer to reveal "the truth" to Snooki's boyfriend. Pauly, Vinny, and Deena find it difficult to be the single roommates in the Shore House.
A fight breaks out after Mike reveals to Jionni that he hooked up with Snooki. Some of the roommates go camping while Vinny and Pauly pull the greatest prank in Shore history.
As the roommates prepare to leave, Mike starts a rumor about Deena's sister, Pauly and Vinny prank the house, and the Storm of the Century hits the Shore.