Hef, Crystal and some of her pals head to Sin City to join the Shannon twins as they promote their dual Playboy covers. The group also plans a special in-suite dinner for Hef's former girlfriend Holly Madison and even brings a bit of the Playboy Mansion to Las Vegas for her! Crystal is nervous about meeting Holly for the first time, especially since she knows how much she meant to Hef. Will Hef's two loves be able to get along? Next, Hef and his entourage go see Holly perform in her new burlesque-style show Peep Show--and Hef even gets in on the act joining his ex on stage! Also, see what happens when Holly invites the gang backstage after the show, and the Shannon twins take the stage at the Playboy Comedy Club.