Scott gets into a fight at New York's Juliet supper club with a man after his girlfriend started arguing with Kim, resulting in Kourtney not speaking to Scott, whom she believes started the fight. Meanwhile, Khloè comes to New York City to visit Kourtney and Kim.

Kim and Kourtney head to Las Vegas for Kim's birthday and Kourtney forces her to do something wild before she turns 30. Meanwhile, Scott wonders if he can maintain his sobriety.