Mitch Buchannon has just been promoted to lieutenant. Mitch and his ex-wife Gayle have an argument about what's best for their son Hobie. Eddie Kramer is the top rookie in the rookie class of '89, and Shauni McClain is one of the last ones to qualify. Shauni starts off as a terrible lifeguard, but the experienced Jill Riley teaches her how to become a good lifeguard.

Instead of attending summer school, Hobie decides to go power skiing with two friends, whose recklessness leads to a tragic accident. Eddie's lack of financial resources is revealed when Craig finds him sleeping in one of the lifeguard towers.

An underwater photographer is attacked and more than a few people believe a sea monster is responsible. With the hysteria over the 'sea monster', Mitch and his fellow lifeguards are determined to get to the bottom of the mystery. Shauni's work as a lifeguard leads to conflict with a bunch of locals and her father but her father has a change of heart after he learns more about what she does.

Harvey is feeding off the local panic, making a small fortune selling ""Creature in the bay"" T-shirts. Just when things start to calm down, the situation escalates when a fishing boat catches something huge in its net, and is pulled underwater by the mysterious entity below the surface.

Mitch falls for a beautiful woman he has rescued, never dreaming she is actually a murderess.

Mitch attends his high school reunion, rekindling an old flame with former wife Gail, while Eddie plays father for the day.

Kaye Morgan introduces a deaf girl to sign language, while Mitch confronts a terrifying childhood memory and Hobie a fear of waves.

The Baywatch crew crack a seaborne drug ring, and Ben finds love with an aging movie star.

After seven years, Eddie's first love appears in Los Angeles, complicating his life with Shauni and entangling him in a web of lies and an unsolved murder.

Mitch receives news of his uncle's death. He recruits Hobie, Eddie and Shauni to trek to northern California's rugged gold country where he learns his uncle may have found the golden boot. Eddie and Shauni are having problems in their relationship when Eddie is accepted into a year-long lifeguard exchange program in Australia.

Drew shoots at the raft. Shauni is taken hostage, and pushed off the cliff. After Eddie and Mitch save her, she finds out that she's not pregnant. Eddie proposes to her. Mitch climbs down with the help of a rope and finds the golden boot; Jed arrives at the trailer. Eddie marries Shauni and they move to Australia.

The love strings between Courtney, Slade and Summer are pulled tight; C.J. accepts a position at Malibu Beach High; Garner tires of work.

C.J. is almost run over in a race, causing Mitch and Newmie to finish; Lewiston is engaged to a princess; Catherine's bodyguard Roland kidnaps her.

Mitch's parents come to visit; Al, Mitch's father, wants him to take over his architectural firm; Summer must tell Jackie about her horrible nightmares.

C.J. and Stephanie go to Catalina for their women's weekend, but the trip does not go according to plan; Hobie and Mitch agree to hire a housekeeper.

A murderer escapes from prison; Kilmer and Stephanie drive to Summer's tower where Kilmer takes them hostage; Hobie makes a periscope for his science class.

Hobie, a cold-hearted Gayle and Ken, Gayle's fiance, get trapped inside Ken's plane when it crashes in the ocean.

Hobie, Gayle, and Ken get rescued from the crashed plane; Matt's father takes back Matt's motorcycle; Jackie has problems with the renovation of her Summer Place.

Matt and Slade have a confrontation on the waves over Summer and decide to have a huge bungee-jumping contest; Garner and Mitch chase pickpockets.

Matt and Slade compete for Summer's affections by surfing. Mitch encounters a desperate woman who needs help for her boyfriend.

Stephanie's sister, Caroline, arrives at Baywatch with exciting news, but her joy is shattered by a cataclysmic event. Mitch finds himself at the mercy of a wounded but dangerous adversary.

Mitch must make a difficult decision when he must choose which boy to rescue from the ocean, and the boy he does not save first ends up in a coma.

After all the beaches are closed down by Los Angeles budget commissioners looking to cut back on funding for the lifeguard squads of Baywatch. Mitch and the team organises a meeting on the beach with the three budget commissioners and some of the people rescued by the Baywatch lifeguards, they try to convince the city budget official not to stop funding for the lifeguards.

Matt is openly unamused by Aussie exchange program lifeguard Logan Fowler's hero complex, nearly running over a drowning man on his way to snatch a female from Matt. Mitch is hitting the breaks on Hobie's maternally sanctioned determination to commit to music. Stephanie has the hots for seismologist Riley Ferguson, but her sister returns homeless after a breakup. C.J. keeps turning up, panicking over a a mild tremor Mitch laughed away.

After Mitch rescues Hobie, he helps Matt commandeer a news helicopter to rescue Jackie from her trailer on the cliff. Hobie also breaks out of his shaken state long enough to help C.J. save the homeless man trapped under wreckage of the pier.

Matt considers fulfilling his dreams of playing professional volleyball when he's given the chance to partner with a pro. Mitch meets the beautiful Tracy, who tries to sell Baywatch a hovercraft. Garner literally chokes when he tries to sing in public. C.J. protests oil drilling in the bay and the lifeguards must rescue the drillers become trapped underwater.

Logan is traumatized by a phobia from his past involving his late father and fire. Mitch discovers that his late father was actually proud of his career as a lifeguard.

Neely Capshaw, the unwholesome, psycho lifeguard who tried to frame Matt for sexual harassment, arrives back at Baywatch for a job as the switchboard operator and is greeted with a hostile reception from everyone, especially C.J. who personally holds Neely responsible for Matt's departure from Baywatch.

Neely and Cody try to keep the four people alive on the sunken oil rig until help arrives when Mitch, Stephanie and Logan must find away to get into the structure to rescue them before the air supply runs out. At the end, despite Neely's heroic attempts and proving herself to be a very good lifeguard during the rescue, the Baywatch team still resents her presence and plans to give her a hard time. Logan finally gives into Gator's demands for the credit of the swim wear, and Mitch finally decides to join a detective agency.

Matt Brody returns to Baywatch to try to make up his lost relationship with C.J. But things take an unexpected turn when a group of ruthless modern day pirates take a millionaire couple hostage and place them under water on the wreck of the sunken oil platform with a few hours of air. When Matt and Neely speed by in their Scarab motorboat, the pirates take them hostage as well.

Mitch's life flashes before him when his parachute fails while sky-surfing. Tabloids follow CJ's relationship with a football player.

Mitch judges a beachside beauty contest, but is tempted by two of the contestants, who both vie for his vote. Caroline's acting teacher puts her relationship with Logan in jeopardy. Logan designs a new rescue vehicle. Donna is blackmailed by a secret from her past.

C.J. befriends a homeless man, who then dies and leaves her a fortune in his will. Hobie helps aspiring lifeguard Manny make the Junior Lifeguard.

After rescuing a group of fishermen and tourists from a huge pier fire, Samantha and L.A. fire chief Captain Huntingdon form a rescue firefighting team of six life guards and firefighters, called the Search and Rescue Unit, for such conditions and Cody, Neely, Jordan, and Newman try out for the unit and meet their firefighting counterparts. Their skills are put to the real test when the new group of Cody, Neely, Catalina lifeguard Rick Jenner, and firemen Jessica, Clay, and Terry are sent on their first mission to rescue two men in a partially submerged basement of a fire-ravaged building.