The following plot was taken from TV.com. Feel free to expand it! Charles(Scott Baio)is studying for finals and after spending three nights in his room and under a lot of stress, Lillian(Ellen Travolta)arrives and says that he doesn't have to worry about the Diner cause he sister Vanessa will be watching it, Charles goes and locks the door Adam(Alexander Polinsky)opens it hitting Charles on the head and once again transforms into "Chaz" his alter ego and once again it's up to Jamie(Nicole Eggert), Sarah(Josie Davis)and Adam to get Charles back to himself again, they try to keep Walter(James Callahan)from finding out the "Chaz" is back but he does, "Chaz" hooks up with his former girlfriend that he thought married Tiffany Kovac(Denise Miller). Aunt Vanessa(also played by Ellen Travolta)arrives and makes a grand entrance as usual. Buddy(Willie Aames)says that they try hitting on the head, so everyone hits him on the head, thinking that everything is okay and not knowing and not knowing that they had a part in hitting Charles on the head, they get Vanessa to talk to Charles about his childhood to cure him, when they realize that they all hit him on the head they decide to try again, but an accident on a motorcycle and a bump on the head brings Charles back to normal.