After salem eats the mouse for Sabrina's science project Sabrina turns him into a mouse so that he can be their lab rat for the science fair, but nasa thinks he's some kind of super-intelligent rat but they want to launch him into space!

Quigley moves out when he feels unneeded in he Spellman house, but the girls realize that they can't be alone and need him.

Gem and the rest of the Stone's become broke and now she has to live with Sabrina. At first they have a rocky start but later Gem gets used to living live a middle class person. Unfortunately her dog Ruby finds oil on her property and she becomes rich again.

Sabrina's great grandad Gandalf comes to Greendale to renew his witchery license and causes trouble in the Spellman household.