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.
Zack is devastated when Sean promotes Carrie instead of him. Zack and Jason befriend a man and his teenage daughter who harbor a dangerous secret. Zack supplies a boat to escape to Maui, but disaster strikes before they get there.
Sean's incredible guilt after a surfing accident leads to a crisis of faith. Zack has to choose between loyalty to his Baywatch teammates and his competitive ambitions.
Sean confronts a "shark tour" operator dangerously dumping chum to lure sharks. A tourist who wants to be a hero to impress his son keeps interfering with Jason's rescues. JD and Kekoa try to keep their passionate relationship a secret.
Jenna convinces ruthless Councilman McKenna to close the Training Center. Sean suspends Zack after he severely injures JD during a rescue. Kekoa expresses her deep love for JD – but to Leigh! Zack sees a ghostly woman from his dreams.
To avoid jail, Danny joins Team Baywatch. Leigh doesn't trust him. Kekoa battles her father over her lifeguard career and moves out. JD, Zack and Jason hustle two gorgeous women who turn out to be con artists who turn the tables on them.
A plane carrying a donor heart crashes, and it's up to Jason to makes a desperate dive to retrieve the heart before the patient dies. Two hooligans steal a car and end up trapped underwater. Jenna tries to get Leigh to turn against Sean.
Leigh goes hang gliding with Sam Parks, a daredevil pilot who puts her life in danger. Things go horribly wrong when Kekoa's cousin, Nani, parties on a boat with drunken frat boys and ends up alone in the ocean.
Sean and Jenna clash when she tries to close Baywatch so investors can develop the property. Carrie is afraid she's not lifeguard material after her reluctance to jump into the water from a hovering helicopter.
Sean reveals a secret to Jenna that could threaten his job. Allie and Jason fly her helicopter to the big island where they have to rescue four people trapped on a volcanic lava reef.
Jason falls for a Kahuna's beautiful granddaughter. Jenna wants to take over the team and shut down the training center she thinks is a waste of money. Sean vows to fight her.
Dawn saves a skydiver who could be her ex-boyfriend in disguise. Jason is assigned to a Beach where he has to confront a terrible incident from his past.
Kekoa, Dawn and Allie reexamine their femininity. Jason rehearses a love scene with a sexy actress. JD tries to rebound from his breakup with Jessie.
Sean has mixed feelings about Jenna, the beautiful but smug new head of North Shore Lifeguards. When nudists protest on the beach, Sean and Jenna have to work intimately together to save the day, if they don't kill each other first!
Dawn and Sean are drawn to the strange and spiritual powers of the mind. Kekoa, Allie and Jessie try to save lives after disaster strikes at a party.
A dark secret from Dawn's past could jeopardize her career as a Baywatch Hawaii Lifeguard. JD puts his new invention, a double scuba fin, to the test trying to rescue a young boy being sucked into whirring propeller blades in a storm vent.