A petty criminal fakes insanity to serve his sentence in a mental ward rather than prison. He soon finds himself as a leader to the other patients—and an enemy to the cruel, domineering nurse who runs the ward.

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'.

The Emperor's armies have developed a new weapon: a thrown blade that can remove someone's head from long distance. As the paranoid Emperor begins decapitating anyone he fears might be a threat, his guard Mau Tang becomes disillusioned with the excesses of his master. He leaves his post and takes up the quiet life of farming and raising a family. Eventually, though, his past catches up with him, and he must find a way to fight the flying guillotine if he is to save his head.