When a lifeguard catches wind of a dangerous anomaly off the coast of San Diego, she commissions a band of unlikely heroes to assist her on a suicide mission to save the west coast from total destruction.
Five years after the East Coast was ravaged in 'Sharknado 3,' Fin and his family have been blissfully sharknado-free, but now sharks - and 'nados. - are being whipped up in places (and ways) that are completely unexpected.
A group of friends decide to spend their last summer together by taking a trip to the rural camping destination "Black Hills". Once there, they find themselves in the middle of a deadly quarrel with a local family.