电影While r owing out in the oc ean, Mitch rescues an un derwater photograp her, named L inda, float ing on some wr eckage. Linda&a mp;#39;s somewhat d isjointed, fr antic stor y about somethin g attacking he r in an underwater cave which ki lled her part ner and dest royed her b oat is mis constructed by Kay Morgan, an ambitio us, publici ty seeking ne wspaper repo rter, who creates a medi a frenzy by st arting rumors a bout a &qu ot;creature in the ba y.&quot ; Harvey Miller, the new lifegua rd and pra nkster, benefi ts from th e events by selling undersea cre ature T-shirts. Meanwhile, Sh auni res cues a young g irl from dro wning and soon b ecomes compelled to re scue the gir l, her brother and th eir moth er from t he life th ey live in the slums of S outh-Central L.A., much t o Eddie&am p;#39;s chagrin. Whil e Shauni deals with her posse ssive father wh o disapp roves of her lifeguar d job, Mitc h also pressur es Captain Tho rp to ask for funding f or new adv anced m otorboats, ca lled Scarabs , for the tea m.！