Craig rescues a woman that develops a fatal attraction to him, placing Craig's wife Gina in mortal danger. A fishing trip goes horribly wrong when the boat explodes! Mitch and his mentor Al have to rescue its passengers, including Mitch's son Hobie trapped underwater in the sunken wreckage.

Playing hooky from summer school, Lt. Mitch Buchannon's son Hobie gets dangerously involved with reckless jet skiers.

During the hottest day of the summer, Craig has to choose between his career as a lawyer and the job he loves being a Baywatch lifeguard. The choice is made when two boys – one the son of Mitch's old buddy who is in hiding – get trapped in a storm drain rapidly filling with water, and Mitch and Craig have to take extraordinary measures to save them.

Eddie must come to terms with his past when he confronts a gang of "surf rats" lead by a former friend from his reform school days. Trevor begins to doubt his lifeguarding skill when his girlfriend almost drowns because of his arrogance.

Hobie overhears his divorcing parents arguing and boats away to a deserted island with two friends, only to have their boat drift away, leaving them stranded on the island with modern day pirates! Meanwhile, Mitch assigns Shauni and Eddie, who are constantly bickering, to work a 24-hour shift together.

After their plane crashes, two robbers attempt to retrieve their suitcase full of stolen money from the ocean. Meanwhile, Mitch and Gayle go to court over custody of Hobie.