Bud, a fed-up make up artist for a movie studio, decides to redo a monster mask for a government film using his untested hormone solution. As the unsuspecting make up artist puts on the monster mask, the experimental hormone solution reacts strangely with his skin, changing him into the very monster he created. The Flash, Batman and Robin, who were in the studio supervising the government film, encounter Bud and dare to challenge his reign of terror. The Flash points out the only way to stop Bud is to counteract the make up formula. Batman agrees and comes up with a formula using some material from the Batmobile. When the heroes turn Bud back to normal, the director offers them a contract to star in his next film. However, Batman points out that they already signed a lifetime contract with the Justice League.
