In Retro/Grade the player assumes the role of Rick Rocket, a spaceship captain who single-handedly defeated an entire alien armada. Rick is about to be awarded with a kiss from the Space Princess when all of the sudden a temporal anomaly occurs: the destruction Rick caused in his adventures was of such a magnitude that it damaged the space time continuum. Rick Rocket must then go back in time in order to undo these actions and restore balance to the cosmos.