A girl who halfheartedly tries to be part of the "in crowd" of her school meets a rebel who teaches her a more devious way to play social politics: by killing the popular kids.

A group of graduate students and scientists uncover an ancient canister in an abandoned church, but when they open it, they inadvertently unleash a strange liquid and an evil force on all of humanity.

Teeny bopper rock star Bart Holton is pushed around by his manager for maximum profit and longs for a normal life. Through a look-alike contest he meets Matt, a student who looks exactly like him and can imitate his dancing style perfectly. Bart proposes to switch roles for a week. At first Matt enjoys being chased by hysterical groupies and Bart enjoys hitting on the highschool girls, but of course both learn quickly that the other's life is quite different from what they'd expected.

Aliens from another dimension cross space and time to come to Earth. A scientist tries to discover what their motives are.