A massive earthquake destroys Baywatch headquarters and leaves Gina's life hanging in the balance. Meanwhile, Cort and Craig are trapped in the ocean. And Eddie is the only one left who can help a pregnant woman going into labor.
Craig, Mitch and Garner go for a weekend hang-gliding trip, but Mitch has a serious accident, and ends up facing death before the fangs of a rattlesnake! Cort reacquaints himself with a woman who has a shocking secret.
Cort promises to come up with $10,000 for a nursing home, but he needs Mitch and Craig's help to compete in a water-skiing race with a big cash prize. Shauni's traumatic fear of the ocean after Jill's death threatens her future with Baywatch.
A local restaurateur puts up a $25,000 bounty for the largest shark caught during the weekend's Shark Derby he's sponsoring. To attract more sharks, he illegally chums the waters, drawing hundreds of sharks uncommonly close to shore.
Mitch gets a surprise visit from his old, mischievous Navy S.E.A.L. buddy and ex-Baywatch lifeguard, John Cort, adding serious problems in their already complicated relationship. And Shauni and Jill fight a battle of the sexes against a shady vendor.
Jill teams up with Trevor to win a beach volleyball tournament, but all she really wants is to beat her former lover's team. Eddie and Shauni team up to rescue a young girl trapped in an armored car that topples off the pier into the ocean.
Craig gets jealous when Mitch reunites with his and Craig's old flame. Meanwhile, Eddie buys a classic Mustang for cheap, only to get arrested for possession of a stolen car.
During a tropical storm, Eddie and Shauni take refuge in the Pomeroy's loft, turning a cold night into the start of a hot romance. In the downpour, two escaped convicts shoot Garner, then break into Baywatch headquarters and take everyone hostage.
Eddie warns Shauni that her new boyfriend Andrew is not a good guy. She ignores Eddie until Andrew gives her a black eye. Meanwhile, Craig and Mitch must stop an out of control party boat before it crashes into the crowded Santa Monica pier.
While housesitting for Craig and Gina, Eddie takes in a runaway whose life is threatened by her mobster boyfriend. Meanwhile, Trevor enters Baywatch rookie school to become a certified LA County lifeguard.
Several people are murdered at the beach by a mysterious man in ghoulish make-up and Eddie is knocked unconscious by what he describes as a "cretin." Eddie's report is met with skepticism until the identity of the killer is dramatically revealed.
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.
Craig rescues a woman that develops a fatal attraction to him, placing Craig's wife in mortal danger. A fishing trip goes horribly wrong when the boat explodes and Mitch and his mentor Al have to rescue its passengers, including Mitch's son Hobie.
Sean has a decision – move to Australia or stay in Hawaii. Zack sees Leigh naked, leading to complications with her fiancé Sam. Kekoa dumps JD and become a party girl. When Sam leaves Leigh at the altar, Sean asks Leigh to marry him instead.
For a rescue, Sean is awarded a free week at Hilton Hawaiian Village, which he declines. Zack pretends he's Sean and enjoys all the freebees, until Sean shows up! A pretty fashion photographer thinks Jason has top model potential.
Leigh takes over at Baywatch while Sean, Jason and Zack go to compete in a 12-mile race of natural obstacles. Jessie's presence at the race creates turmoil. Leigh and Jenna pretend to be lesbian lovers.
Investigating toxic dumping, Sean and Leigh end up chained inside a chamber slowly filling with toxic seawater. Can Sam get them out in time? To raise money, Jason and Zack have to hula dance in grass skirts in front of a lot of women.
Kekoa is devastated when Jessie tells JD that he's the father of her child. A rescued body boarder is paralyzed. Sean has a romantic encounter with a beautiful, woman he thinks might really be Pele, the goddess fire.
Zack corrupts the headquarters' computer system forcing everyone to work in the Dark Ages. Sean is freaked because a major donor is about to arrive in the midst of chaos. Jason saves Brit from her ex.
Jenna invests all her money with an investment banker who turns out to be a con man. Derek Hart is the kind of man JD wishes he was. But when Derek jumps off a cliff, JD and Jason dive in to save his life, in more ways than one!