The guys’ prestigious offer to work over the summer at the North Pole—and Penny’s resultant behavior—leaves Leonard unsure if he should go.
Leonard is torn between being honest or self-serving when Stuart asks his advice for an upcoming second date with Penny. Wolowitz realizes there’s a crucial error in a toilet he designed for the International Space Station.
Leonard and Raj take Wolowitz to Las Vegas to help him get over his break-up with Leslie. Sheldon, home alone and looking forward to it, locks himself out and has only one other place to stay—Penny’s.
A fellow comic book enthusiast’s hitting on Penny leads to Leonard, Raj, and Howard going to a bar’s Ladies’ Night.
Penny feels threatened when another sexy woman moves into the apartment building and angered when she senses the guys are being taken advantage of.