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.
No longer able to cope with his guilt of surviving the attack on Pearl Harbor, Jessie's grandfather comes to Hawaii to end his life. Can Mitch intervene in time? Kekoa and Sean help a college basketball player learn to swim.
Sean tries to keep his relationship with Jenna a secret. When the team has to rescue swimmers trapped in a filtration tube, Jenna is sucked down a shaft and Sean risks everything to save her, revealing his darkest secret.
Jessie tries to overcome her condition to compete in the Maui triathlon with Dawn as her coach. Allie suspects an agenda behind Dawn's motives. Jason and Kekoa seek a mysterious underwater Hawaiian spirit that lures people to their deaths.
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!
Sean is faced with a life-or-death decision during a daring cave rescue in which Kekoa faces her greatest fear. Hobie plans to get married, but Mitch is at odds with his fiancée's obnoxious parents.
Sean threatens to kick Jason off the team after Jason defies his orders and makes a daring rescue. Allie, Dawn and Nick have to save a drowning man and his pregnant wife about to give birth in the ocean.
Jessie and Kekoa battle each other even as they rescue a man stranded behind a waterfall! Sean and Allie search for treasure. JD and Jason help two girls save a cat caught on a boat mast, but wind up catapulting it across the water!
Sean leads Team Baywatch on a daring night rescue in shark-infested waters to save 6 kayaking teens stranded off the perilous Na Pali coast.
Tanner believes The Shark Island Legend. Mitch doesn't. Team Baywatch competes with the Coast Guard. Jessie and Kekoa both dump JD. Swimming naked in a Hawaiian purification ritual, Jesse has to make a rescue in the nude.
Tanner visits Mitch, tours the Islands, and befriends a dying girl. After failing her initial "test", Dawn challenges Sean to a dangerous contest with her future at Baywatch hanging in the balance. JD competes to join the America's Cup Sailing Team.