Are you ready to rock? The Usherette (also known as Trixie) gets us into the mood. The opening number incorporates references to classic sci-fi films and the actors who appeared in them, including King Kong, The Day the Earth Stood Still, and Forbidden Planet. No prior knowledge is required, however — just settle in and get ready for the ride.

On the way back from a wedding, the clean-cut Brad Majors proposes to his equally wholesome girlfriend Janet Weiss. Who knew there were so many rhymes for Janet? They head off to visit their former science tutor, who taught the class where they met.

Brad and Janet’s car gets a flat tire, leaving them stranded on a dark and stormy night. The only chance of finding a telephone is in the forbidding gothic building that looks like it could be Frankenstein’s castle.

Brad and Janet try to make a run for it but are detained by mad scientist Dr. Frank-N-Furter, a self-described “sweet transvestite from Transsexual, Transylvania.” He invites them to his lab, where he’s making “a man with blonde hair and a tan — and he’s good for relieving my tension.”

After Brad and Janet are greeted by the butler Riff Raff and maids Magenta and Columbia, they’re thrown into the show’s signature dance number. You know the words: “It’s just a jump to the left and a step to the right...”

What madness is all this, you might be wondering alongside Brad and Janet? Who knows, so let’s do the time warp again!

Frank unveils his creation, his dream man, whom he has named Rocky Horror. Rocky senses that he’s “at the start of a pretty big downer,” but the others try to be reassuring.

Frank praises Rocky’s muscular physique and sings a hymn of praise to bodybuilders. It'll just take seven days of protein and press-ups, Frank claims, for a complete body transformation (which is kind of ironic since Rocky is in shape already).

The original Rocky Horror Broadway production featured a song called "Charles Atlas Song," which was replaced by "I Can Make You a Man."

Bless my soul! There’s another surprise in store: In the freezer is Eddie, a former lover of Frank and Columbia, who's become something like a zombie. He remembers going out on dates and making out in the back seat of the car while listening to rock and roll on the radio. Frank, though, viciously puts a end to his reverie.

In the original Broadway production, this song was called "What Ever Happened to Saturday Night."

Frank recommits to turning Rocky into his ideal physical specimen, and the number morphs into a wedding march.

Brad and Janet are ushered to separate bedrooms. In the night, Janet receives a visitor, who turns out to be Frank. She has never gone beyond kissing before. However, now that she’s tasted the pleasures of the flesh, she wants to be “dirty” with a “creature of the night.”

"Touch-A Touch-A Touch-A Touch Me" appeared in the original 1973 U.K. production but was cut for the 1975 Broadway premiere. But Susan Sarandon's onscreen performance made the song so iconic, it was added back to the stage show.

Brad is jealous that Janet slept with Frank and indulges in self-pity. The others encourage him to pull himself together. Riff Raff announces another visitor: Dr. Everett Scott, the science professor Brad and Janet were planning to visit.

It's revealed that Dr. Scott is Eddie’s uncle, but Scott never liked his nephew. “When Eddie said he didn't like his teddy, you knew he was a no-good kid,” Scott sings, adding that he was even worse as an adult.

In the film adaptation, this song is just called "Eddie."

“You’d better wise up, Janet Weiss!” It turns out that the inhabitants of Frank's castle are aliens who abandoned their original earthly mission to create Rocky and have sex with humans. Who could have seen that coming?

Rocky, Columbia, Brad, and Janet sing and dance with wild abandon in a floorshow masterminded by Frank. All are overcome with uncontrollable lust, and an orgy erupts.

These sequences are sometimes listed as one musical number titled "Floor Show."

Riff Raff and Magenta are ready to go home to their planet. Frank believes he must go with them and bids everyone an emotional farewell — but Riff Raff has other ideas.

The castle is transformed into a spaceship headed for Transsexual, Transylvania. Brad, Janet and Dr. Scott escape and attempt to process what they just saw.

The Usherette summarizes the events of the evening. What just happened? Who knows, but it was certainly weird and wonderful. There’s usually also a reprise of “Time Warp” to send everyone home on a high. Let's do the time warp again!

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