Space Ace

Space Ace follows the adventures of the dashing hero Dexter, better known as “Ace”. Ace is on a mission to stop the villainous Commander Borf, who is seeking to attack Earth with his “Infanto Ray” to render Earthlings helpless by reverting them into infants. At the start of the game, Ace is partially hit by the Infanto Ray, which reverts him into an adolescent, and Borf kidnaps his female sidekick Kimberly, who thus becomes the game's damsel in distress. It is up to the player to guide Ace, in his adolescent form of Dexter, through a series of obstacles in pursuit of Borf, in order to rescue Kimberly and prevent Borf from using the Infanto Ray to conquer Earth. However, Dexter has a wristwatch gadget which optionally allows him to “ENERGIZE” and temporarily reverse the effects of the Infanto-Ray, to turn him back into Ace for a short time and overcome more difficult obstacles in a heroic manner. The game's attract mode introduces the player to the story via narration and dialogue.

Source: TheGamesDB