A regeneration experiment on a severed arm goes awry, turning the limb into a murderous, reptilian creature.

A henpecked electrician is nagged by his recently deceased wife into taking revenge on the gang responsible for her death.

A college teacher brings the little creatures back to his campus, where they proceed to terrorize the faculty and students.

A hotshot teenage car racer persuades the class president of a small Minnesota high school to gamble on illegal car races to raise money for their school which is facing…