Gabe takes the Sweathogs on a field trip to a museum, only to become locked in a tomb with a mummy for the night. John Astin guest stars.
Gabe tries to dissuade the Sweathogs from forming a gang to combat the New Utrecht High "punks."
The Sweathogs stop speaking to each other after a series of inconsequential misunderstandings.
The Sweathogs pressure Kotter to get a physical checkup that the school is offering for free.
Julie's sister makes a surprise visit from Nebraska and, to Julie's dismay, dates Epstein and becomes a Sweathog.