An earthquake shakes Baywatch headquarters and causes many problems for the lifeguards and for one, a life altering decision is made.

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.

Mitch rescues a diver trapped 90 feet below the ocean surface, but almost dies while experiencing the effects of decompression sickness.

A beautiful Olympic hopeful disappears after a savage shark attack and Eddie's brother Bobby arrives for a weekend visit.

Two thieves lose their loot under a lifeguard tower and Shauni is swept off her feet by an eccentric beach poet.

Toxic waste, corporate greed, and a determined environmental spell trouble for the Baywatch lifeguards.

Harvey and Mitch pursue and capture a disgruntled gambler turned high-seas pirate. Meanwhile, Eddie struggles with the disapproval of Shauni's father. While Eddie is walking away from Shauni's sisters engagement party, Kim gets her hand stuck in the pool pump and luckily Eddie saves her.

A woman from Mitch's past becomes one of his fellow lifeguards and stirs up memories for Mitch; Matt must contend with surfers wanting to take over part of the beach.

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.

Matt drives his motorcycle on the cliffs above Malibu and challenges Hudson; Mitch trains to beat Stephanie with Garner as his coach.

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 and Stephanie go undercover as two wealthy individuals to stop murderous pirates from taking over Baywatch.

The governor holds a speech on the pier; three bad guys plan to blow the pier into pieces with a boat. Garner meets his sister's old friend Wendi again.

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.

A diamond smuggler looks for loot he has hidden in one of Slade's surfboards; a group searching for extra-terrestrials drives the lifeguards crazy.

Mitch must contend with gangsters while going through rehabilitation.

Eddie believes he sees a ghost by the water and the others believe that he is losing his mind. Hobie learns that a friend's pet is going to be euthanized for an alleged attack and resolves to help both of them.

Hobie becomes enamored with a homeless girl whose mother has disappeared.

Ex-con and martial arts master Mason Sato terrorizes Mitch, Kaye, and Hobie.

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

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.

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.