Out on a routine mission, Nanairo Planetary Patrol Officers Rallen and Jeena respond to a strange distress signal and discover the wreckage of an escape capsule in which an old man has been in a cryogenic sleep for over a decade. Once conscious, the man, whose name is Aldous, relays an unbelievable tale of the attack on his home planet by a vicious horde of creatures known as the Krawl. Rallen, Jeena, and Aldous then set out on a mission to save Nanairo from the destructive planet-eating Krawl.