Sherry has lived with her family in a sealed bunker since things went wrong up above. But when they run out of food, Sherry and her dad must venture outside. There they find a world of devastation, desolation... and the Weepers: savage, mutant killers. When Sherry's dad is snatched, she joins forces with the gorgeous but troubled Joshua - an Avenger, determined to destroy the Weepers. But can Sherry keep her family and Joshua safe, when his desire for vengeance threatens them all?