During the hottest day of the summer, two young boys become trapped in a storm drain that's filling up. One of them is the son of Mitch's old buddy, who's in hiding. Craig is forced to choose between his two careers.

Eddie faces Jimmy, his old foster home friend turned criminal. Mitch is stressed over his upcoming lifeguard checkup with Captain Thorpe. Trevor questions his skill when his girlfriend almost drowns because of his oversight.

Mitch and his ex-wife Gayle must put aside their differences to find Hobie and his two friends who got stranded on a channel island where modern day pirates hide. Eddie and Shauni share a shift and deal with an annoying tourist couple.

Mitch takes Gayle to court to keep the custody of Hobie. After their plane crashes, two robbers attempt to retrieve their suitcase full of stolen money from the ocean. Captain Thorpe joins Eddie and Shauni on their shift.

Jill investigates a suspicious drowning and becomes involved with the drowned man's suspicious family.

Trevor enters rookie school to become a certified county lifeguard. One rookie uses steroids to beat him. Eddie helps a girl pursued by her abusive, murderous, drug dealing ex. Craig and Gina try to make a baby during a weekend getaway.

Eddie warns Shauni that her new boyfriend, Andrew, is not a good guy, but she ignores it until Andrew gives her a black eye. Craig and Mitch must stop a party boat out of control before it crashes into the crowded Santa Monica pier.

A scary masked serial killer (popularly called the Night Puncher) who roams the beach at night targets a local senator. Motherly Gina takes care of Eddie after he gets his wisdom teeth pulled, which makes him have an oedipal wet dream.

During a violent tropical storm, two escaped convicts shoot Garner and leave him to die. They then break into the Baywatch headquarters and take everyone there hostage. Captain Thorpe tries out for a radio surf reporter.

Mitch hooks up with his and Craig's old flame, which makes Craig jealous. Eddie buys a nice car cheaply and only realizes that he was swindled when he gets arrested for driving a stolen car.

Jill teams up with Trevor to win a beach volleyball tournament, but all she really wants is to beat her ex's team, no matter what. Eddie and Shauni try to rescue a child trapped in a crashed armored car that's about to fall into the sea.

Mitch's charismatic but roguish old buddy, John D. Cort, joins Baywatch. However, he's actually there to pull off a shady deal. Shauni and Jill start selling sandwiches on the beach to put a shady sandwich vendor out of business.