洛杉矶又受到怪物的袭击，这次袭击的怪物力量远比它们的前辈更为强大，整座城市陷入了恐慌之中，罗素博士临危受死,带领着冲锋队奋起迎战。

A 'mockumentary' about David Moore, the filmmaker who first dreamed of sharks in a tornado and brought on disaster by using real sharks. The first SHARKNADO was to be a movie never seen, a crime never reported, a tale never told. Until now.