Sparks fly when DJ Pauly D and Vinny invite their ex-girlfriends to live and work with them in Las Vegas; old wounds and the temptations of Sin City could make finding love a losing bet.

Pauly and Vinny attempt to make amends with their exes, and the prank war champions continue their reign when they make the new guys their next target.

Pauly's and Vinny's reputations are at stake when their suitemates embarrass themselves on their first day of work; Marissa confesses to her mom that she had a one-night stand.

Pauly tries to make peace with Nikki but leaves her in tears; Vinny confronts Maria about her past insults; the suite is left reeling after an ill-advised hook up.

The suite is shocked when Pauly and Nikki rekindle their rocky romance; the girls devise a plan to expose Antonio's "cheating"; Derryn hooks up with a stripper.

Mike "The Situation" and his wife, Lauren, make a surprise visit; Pauly and Vinny coach Antonio through his girlfriend troubles; insults turn two best friends against each other.