When his wife Samantha suffers a brain embolism, Hadrian Beckett uses experimental stem cells to revive her. However, when Sam is transformed into a shape-changing creature, Hadrian must try restore her humanity.

When a freak accident causes an industrial waste contamination to spawn a flock of bloodthirsty mutant seagulls, the many residents of the New England coast are attacked by the murderous birds and have to survive their attack with barely anywhere to hide.