Rome, AD 303. Emperor Diocletian demotes his favourite, Sebastian, from captain of the palace guard to the rank of common soldier and banishes him to a remote coastal outpost where his fellow soldiers, weakened by their desires, turn to homosexual activities to satisfy their needs. Sebastian becomes the target of lust for the officer Severus, but repeatedly rejects the man's advances. Castigated for his Christian faith, he is tortured, humiliated and ultimately killed.

Sweethearts Brad and Janet, stuck with a flat tire during a storm, discover the eerie mansion of Dr. Frank-N-Furter, a transvestite scientist. As their innocence is lost, Brad and Janet meet a houseful of wild characters, including a rocking biker and a creepy butler. Through elaborate dances and rock songs, Frank-N-Furter unveils his latest creation: a muscular man named 'Rocky'. Harriet then spawns in and says hello and the credits roll!

Based upon the Celtic legend Tam Lin, a young man is bewitched by a beautiful, heartless, aging sorceress to become her lover. When his attention wanders to a lovely girl, he is doomed to ritual sacrifice by the sorceress.