在这部新大白鲨恐怖片中,汉普湾的观光旺季即将来临，风帆大赛也将展开，不过却发生了鲨鱼事件。方富商及主办人山姆路易斯执意不延后比赛及关闭海滩，以为能用鲨鱼网阻止任何鲨鱼进入，不料这条食人巨鲨是经过海军训的杀人机器，不但闯进赛，肆恣猎杀选手们，之后更杀死所有追捕它的人。海洋学家比利和索伦家人要如何对付这可怕的怪物呢？
A tiger shark bred by the Navy as a killing machine is wrecking havoc in the sleepy tourist town of Hampton Bay! In the meantime, the mafia is involved with sleazy real estate investments, and send their thugs to keep a lid on the fact the residents are destined for clam chowder... Sea World owner, Dag, and his dolphins come to the rescue to save Hampton Bay from both the mob and military covert operatives!
