After Janet accepts Brad's marriage proposal, the happy couple drive away from Denton, Ohio, only to get lost in the rain.

They stumble upon the castle of Dr. Frank-N-Furter , a transvestite who is holding the annual convention of visitors from the planet Transsexual.

Frank-N-Furter unveils his creation, a young man named Rocky Horror who fears the doctor and rejects his sexual advances.

When Frank-N-Furter announces that he is returning to the galaxy Transylvania, Riff Raff the butler and Magenta the maid declare that they have plans of their own.

(An audience participation film)

Summary written by Rick Gregory