All of humanity is once again at stake in Space Ace. The evil commander Borf has developed an "Infanto Ray" which can change anyone it hits into a baby. Not only does our hero Ace have to defend Earth against this, but Borf has increased the stakes by kidnapping Ace's girlfriend Kimberly! As Ace your mission is to find and destroy this "Infanto Ray", rescue Kimberly and save the Earth from the evil hands of Borf. Throughout the game, Ace morphs back and forth from the puny Ace to the heroic Space Ace, adding another twist to gameplay.

Space Ace includes every scene from the original laserdisc arcade game. ~ Joshua Hoffman, All Game Guide