Piggy is determined to perform with Christopher Reeve, who is playing up the Superman references such as a telephone booth near his dressing room for costume changes, his Kryptonian strength, and invulnerability.
Several Muppets don costumes and try to learn how to become superheroes themselves with disastrous results, but Piggy herself impressively performs as "Wonder Pig" in honor of this episode's guest star.
Miss Piggy asks Andy Williams to sing "Love Story" for her and Kermit, who have just become engaged. Unfortunately, Kermit hasn't heard about the engagement yet. The rumor slips out, and soon everyone thinks Kermit and Piggy are getting married. Meanwhile, the backstage cast puts up with a group of cheese hanging around backstage and trying to avoid the rats.
Statler and Waldorf rate the show like Olympic judges. First, they give Kermit a two. Then, they give the opening a three, but the audience demands they bring it down to a zero. All of the Muppets get low scores (though Fozzie's "One" is a compliment by them), and Gonzo even gets a six. The Muppets think it's just a tough audience, but Diana Ross gets tens every time which gives her high scores.