Claire must rein in her enthusiasm for Halloween and keep her celebration kid-friendly; Phil decides to hold an open house on Halloween; Mitch and Cam have a costume party; Gloria's hormones make her more quick-tempered than usual.
Anna and Summer are upset with Seth. Julie has love problems. Sandy helps Jimmy with legal issues. Kirsten's indiscretion is exposed. Ryan and Luke form an unexpected alliance.
Frasier and Niles try to boost their masculinity by taking an automobile repair class.
Ryan is glad Theresa will stay in Newport. Julie and Luke's secret affair is threatened when Jimmy sees them. When Anna plans to move back to Pittsburgh, Seth tries to stop her.
Julie has a memorable wedding shower. Theresa returns, and when Ryan finds out why, he is shocked. Seth gets the chance to meet Summer's father, but it doesn't go very well.