Kim's new boyfriend is a stand-up comedian whose act is based on fat jokes, which hurt Nikki and her friends. Stanley reveals he was an overweight child.
After Veronica gets engaged to a mystery man, the Professor falls into a depressive state that Nikki takes advantage of by moving in and parading him as her beau. Meanwhile, Kim has trouble with her new living arrangements.
When Nikki moves in with Kim and changes her routine, Kim tries to find the courage the stand up to her. Meanwhile, the professor is in charge of a burglar patrol in the building.