While preparing for Irma's birthday party, Michelangelo realizes he has forgotten to invite the guest of honor. He contacts April, who is in the midst of interviewing Professor Von Ziflin about the discovery of a meteorite that "just crashed in the area." The professor claims that this is a very unusual meteorite with a core composed of an extremely rare isotope known as "Exaporon." The Turtles turn on their TV to watch their favorite journalist as she interviews the professor. Suddenly a noxious gas fills the room and someone steals the meteorite. Before the thief can escape, he stops in front of the news camera, revealing himself to be Shredder.
Then, Krang uses the exaporon to build an enlarging device, and he accidently shoots Irma with it. She grows extra large and nearly turns the city into a junkyard, and the Turtles have to reclaim the remaining Exaporon isotope to reverse the process.
Marianne and Luigeena Mario and Luigi's annoying female cousins come over and flirt with Lyle Alzado.moreless