The Nerdlucks, a grouchy gang of tiny space creatures, have been dispatched by their boss, the ruthless, belligerent Swackhammer, to kidnap Bugs Bunny and his Looney Tunes cohorts and export them to Moron Mountain, Swackhammer's failing theme park on the Nerdluck's boring planet. Bugs challenges the small, weak aliens to a fateful basketball tournament: if the Looney Tunes win, they'll remain on Earth. But if the aliens win, Bugs and company are headed into the hands of Swackhammer. Then Bugs discovers the Nerdlucks' ability to instantly "absorb" new skills--an ability that lets them siphon basketball talent from the likes of NBA stars Charles Barkley, Patrick Ewing, and Larry Johnson, turning the Nerdlucks into the powerful, speedy, unprincipled and monstrously gifted Monstars! Bugs knows he needs some serious help. But where can he go? Basketball's best players are all having their skills "absorbed" by the aliens. Of course, there's a baseball player he happens to know...