Betty Jetson and Sydney Screams suspect that their roommate Vanya Vixen has been trying to lose weight, behind their backs; the agreement was, we ALL plump up, though. So Sydney & Betty bombard unsuspecting Vanya with questions. When Vanya doesn't respond accordingly to the confrontation, Sydney & Betty reveal that they've been sharpening their magical skills, and with witchy evil grins, they freeze Vanya, and her to ingest weight-gainer!