Los Angeles is having a heat wave and it's going to be a busy day for the lifeguards.

Craig joins Cort and Eddie on a trip to Mexico for a long overdue vacation but things turn out very differently from their expectations.

An illegal offshore casino causes problems for Cort and some of his fellow lifeguards. Hobie thinks his English class is going to be a breeze when Mitch starts dating his teacher but soon learns otherwise.

A fisherman tricks new lifeguard Megan into rescuing him in order to attack her. When he continues to stalk her, Mitch has to find a way to stop him. Meanwhile, when Shauni suffers from lifeguard burnout, Eddie takes her on a romantic weekend getaway, which quickly turns passionate.

Mitch's brother Buzzy comes to visit with his estranged son Kyle, who proves to be a bad influence on Hobie. When Kyle illegally surfs near the condemned San Dimas Pier, he collides with a submerged piling, and is sent underwater, unconscious.

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

The lifeguards compete against each other to determine who is the best; Stephanie and CJ move in together but things get complicated for both of them.

Hobie weaves a web of lies to impress a girl; Summer is humiliated when she mistakes an offhand invitation from Jimmy Slade for a date.

Guido tells Mitch that he has started a new business called Windows by Guido; a Captain named Rolf Angstrom visits headquarters; a drug dealer escapes.

Stephanie is shot off the cruise boat by a drug dealing women and Mitch jumps in to save her. They struggle to stay afloat in the water; Matt and C.J. win big in the casino; Summer gets worried when she can not find Mitch.

Hobie falls in love with a girl in junior lifeguards; Mitch and Jackie have a number of interrupted dates; Matt and Summer discover that they love each other. Thinking he is romantic, Hobie takes the girl on jet ski to a cove near a seaside monastery to kiss her as the bells toll, but they get caught in a dangerous current.

While Mitch, Garner and the rest of the Baywatch team deals with a street gang that have been hanging around at the beach and harassing swimmers, Stephanie falls for Carlos, the new lifeguard trying to get away from the gang he was once in and tries to rescue his sister from the gang's leader.

Stephanie, C.J., Matt and Summer take a weekend vacation to San Diego to demonstrate water rescue procedures while staying at the famed Hotel Del Coronado. Summer correctly begins to think that her hotel room is haunted, when she's a haunted by the ghost of a wealthy businessman who mistakes Summer for his lost love from a doomed love affair back in 1943.

C.J. thinks about her future as she spends more time with Keith and helps to rescue a stranded dolphin. The ghost who haunts Summer's hotel room takes her to be the love of his life who betrayed him and plots to reenact the tragedy that drove him to suicide 50 years ago.

Three months after the trauma of the massive earthquake, Hobie arrives back home after spending the summer in Ohio with his mother, Gayle, who asks Mitch marry her again in a formal ceremony on the beach. Everyone is delighted, except for Stephanie who still has feelings for Mitch.

Stephanie returns to Baywatch only to become victim of an ultraradical eco-terrorist trying to destroy an offshore oil platform. Mitch makes waves in Garner's relationship with a new lifeguard.

John D. Cort, returns to Baywatch, homeless and depressed, but finds a purpose for living when the potential donor of a young leukemia victim is reported missing.

After a number of unusual circumstances occur around the beaches, including Cody and Neely rescuing two surfer boys that come down with a fever, an environmentalist group comes to Baywatch to protest the dumping of chemicals from the storm drains, and Mitch enlists the Beach Boys for a benefit concert to help out raise money for repairing the storm drains.

Logan takes Cody's car without his permission to get to a business dinner, gets into an accident, and claims a hit and run driver was responsible.

Mitch unknowingly swims in polluted waters after Baywatch is contaminated by toxic waste. After he falls ill, Neely, C.J. and Cody must come to his rescue and discover the source of the illegal dumping and the nature of the poison.

Two teens form a suicide pact to be together when their disapproving parents try to keep them apart.

Neely and Mitch try to help a manic-depressive female bodybuilder. Newmie's potential romance with a beautiful woman hits a snag because she doesn't English.