Ever since an experiment in the high school physics lab went awry, Riverdale has become a magnet for the stuff of which 'B-Movies' are made of…..

BRAIN OF TERROR
Moose's trouble with school work leads him to employ the use of Dilton's new invention, a helmet which seems to make him miraculously smart. Moose soon becomes addicted to his new brains and keeps secretly using the machine, which grants him telekinesis along with a dangerous angry streak -- and he leaves behind friends, football, and a heart-broken Midge in the process.

TWISTED YOUTH
The Riverdale water supply is infused with an age-reversing chemical, and suddenly, all of the town's adults are turning into teenagers…including Mr. Lodge and Mr. Weatherbee, who are set to compete in a drag race.

COMPU-TERROR
Dilton rescues a computer with a highly efficient AI from destruction and installs it in Pop Tate's shop. When the machine decides that humans themselves are inefficient, Archie must stop it before it destroys his friends.