With his girlfriend pregnant, Dante, a pacifist hippie who makes lip balm called, Mama Earth; is struggling to keep his bills paid. After finding a mysterious flyer for a Birthday Clown Wanted, Dante calls the number and obtains the job. At the Birthday Party he meets a female clown named, Pele. After joining her Pity Party, Dante is pulled into an underworld and quickly finds himself in over his head.

When a tribe of cavewomen imparts cruel justice on one of their own their fate takes a turn for the worst. After discovering and falling in love with the corpse sacrificed by the girl-gang, a lone wandering giant of pre-historic mythos is inspired to homicide. Consequently the cavewomen are menaced by the heartbroken and bloodthirsty cave-brute with a grudge, and the prophetess among them is ignored when she predicts the tragic outcome.