Overview
The serialized Mighty Mouse story "The Great Space Chase" from The New Adventures of Mighty Mouse and Heckle & Jeckle seen on the popular Saturday morning series was re-edited into a 1982 superhero comedy film by Filmation.
The film got a big-screen release, a re-release as a kids' matinee film, and was released on VHS. The film version also omitted a few scenes from the original serialized version.
Story
In the vast reaches of space, Oil Can Harry is chasing Queen Pearl Pureheart of the Interstellar Federation, when she informs him he is both speeding and has violated sector code 6655A, attacking a star cruiser. His reason for wanting to destroy her and the ISF is that "everybody's got to have a hobby". Pearl's ship escapes both an asteroid belt and the Milky Way, while Harry's ship does not. Eventually, Harry's ship hides in a black hole and uses it to capture Pearl's ship. She then summons Mighty Mouse to her rescue with the "Save Our Necklace," prompting Harry to release his "Catatomic-catom-aton", a giant robot cat that can destroy planets, melt steel walls, and crush spaceships. (It also makes great coleslaw according to Harry.) The Save Our Necklace sends a 3D holographic distress signal that finds Mighty Mouse no matter where he is, and he sees it while lifting weights at his house, which is in the shape of a crescent moon and made of cheese.
While the cat robot battles Mighty Mouse unsuccessfully, Pearl decides she can't wait, so she sneaks out and pulls out the catship's whisker, freeing it, but leaving her behind. Her first mate doesn't realize this until another crew member mentions "one new queen" in the supplies list in the damage report. The first mate uses the necklace to contact Mighty Mouse, who then discovers the cat robot was just a giant wind-up toy, and unwinds it. He then rushes to save Pearl, whom he finds hooked up to Harry's "Psycho-Recycler", which allows him to read minds. This is because he tried to force her to tell him where the ISF hides the Domesday ("dooms day") Device, a giant vacuum cleaner that sucks up everything in the galaxy, and she refused. In spite of his instructions to Swifty, his first mate, not to press the foot pedal, Swifty does so upon hearing Harry shout, "Step on it!", when the security scanners detected Mighty Mouse, and the rest of the cat crew verbalizes warnings since the alarms failed. Pearl's brain ends up in Harry's body, and vice versa.
From Wikipedia (CC BY-SA 4.0).