A freak weather system turns its deadly fury on New York City, unleashing a Sharknado on the population and its most cherished, iconic sites - and only Fin and April can save the Big Apple.

After Zane Ziminski is found dead five people received envelopes with details of an alien invasion. This group of five includes 3 scientists, Zane's brother Jack, and a reporter. Quickly, the group is down to three and then Jack and Bridget, the reporter. With a small piece of alien technology, they must escape from the aliens, who take human form, and try to convince others that aliens exist.