When Harvey, a geek Lab Technician rattles the words... "Evildoers better flee, here comes...MERCURY!" Harvey magically transforms himself into the superhero powerhouse called MERCURY MOUSE!!!
Astro Labs is called out to the small country town of Cheddarton to investigate the crash site of a UFO. When the townsfolk begin to report sightings of an alien on the loose, it's up to Mercury Mouse to make contact and determine if it is friend or foe...