A working-class girl and her trust-fund boyfriend move into a downtown New York tenement apartment to try to make a life together. Their volatile relationship is further complicated when they learn their angry downstairs neighbor is building an A-bomb in his apartment.

Jimmy needs $900 to clear a gambling debt but a series of lies leads to Ray trying to raise the cash from friends who owe him money.

Two high school goofs steal an explosive device from another world that has been hidden on earth, and an alien named Mr. Armageddon is sent to retrieve it from them.