A virus has decimated humankind. Those who survived emerged blind. Centuries later when twins are born with the mythic ability to see, their father must protect his tribe against a threatened queen.

Pursued by intergalactic bounty hunters, the Critters return to Earth on a secret mission and encounter lovelorn high-schooler Christopher, his crush Dana, his best friend Charlie, and his mom Veronica, whose past will come back to bite them—literally.