Amidst chaos, the new Baywatch Hawaii team must learn to work and live together. Jason meets a man with a mysterious past. A girl Mitch saved suffers from secondary drowning, leading to a critical test of the new recruits.
Mitch envisions an International "Top Gun" style lifeguard school in Hawaii. He invites Sean Monroe to lead the new team, which will include a variety of highly rated lifeguards from beaches around the world.
After Mitch's lifeguard buddy's ex-wife dies in Australia, Mitch and the team accompany him on a trip down under to meet the son he's never known.
Mitch feels the need for speed when Tanner's cousin, Damon Lusk, a race car driver in town for a major competition, visits Baywatch. Meanwhile, Newmie and the gang develop a TV show about lifeguards that they try to sell it into syndication.
When caught up in a high-risk adventure at sea, Craig tells Mitch a shocking secret. Meanwhile, Jessie works to creatively end JD and Cody's rivalry during a beachside triathlon, and April comes clean with Manny.
After he tries to save Tanner from his abusive father, Mitch ends up on the wrong side of the law. Meanwhile, Jessie's irresistible charm makes a stunt pilot's heart take flight.
Mitch tries to reunite an Army parachutist with her estranged Naval-officer father, while Cody helps a beautiful woman try to reach record-setting depths at a national free-diving competition.
Cody puts his career, and his life, on the line when he uses a performance-enhancing supplement in hopes of making the Olympic swim team. Alex becomes the object of Mitch's rejection, and Newmie's affection.
A young, hearing-impaired girl learns a lesson in friendship when she, Mitch and Alex protect an orangutan, while Cody and Jessie deal with its abusive owner.
Upset about his failed marriage to Neely, Mitch goes for a day-long tower swim along the beach and encounters problems that distract from his own, including April and Craig's May/December romance, and reluctant heroes Cody and JD.
Mitch struggles with Neely's lies and the truth about their shipboard wedding. Cody and April race to save survivors of their plane crash. A tragic turn of events puts April in mortal danger when half the plane's fuselage sinks beneath the Pacific.
Mitch's marriage to Neely falls apart when her ex-husband arrives at Baywatch and they learn the truth about their cruise ship wedding. Cody and April fly to New York, but a frantic rescue effort ensues when their plane crashes during take-off.
After an escalating, heart-stopping chase across a glacier, Mitch rescues Hobie and Leslie from hitman Gavin. Mitch returns to the Dawn Princess with a romantic proposal for Neely.
Mitch and Cody surprise Neely and Lani by showing up on the Dawn Princess. During the stop in Juneau, Gavin finally recognizes Leslie, who takes a clueless Hobie with her in the beginning a harrowing chase…
While Lani prepares for a photo shoot on a cruise to Alaska, Neely travels to see her ex-husband who lives in Juneau. Hobie's good fortune lands him, Mitch and Cody on the cruise ship to Alaska as well, but danger lurks onboard.
After he saves Neely's new nanny from a boating disaster, she develops a lethal attraction to Mitch. April and Manny join a charity contest arranged by Newmie for his juvenile diabetic nephew.
After a swimmer shows symptoms of a deadly virus, headquarters is quarantined, trapping Mitch, April, Donna and JD inside with an annoying salesman. With JD waylaid, Newman takes on his plum assignment overseeing a photo shoot of sexy models.
Cody makes a crazy bet with some local hotshots. Mitch risks his uncle's new Scarab in a wild race. Meanwhile, Neely and her baby daughter Ashley move in with Mitch for a couple of days sparking a twist to their relationship.
Caroline's truck is hijacked by a young thief who forces her to drive him on a wild getaway chase. Neely reveals a shocking secret about her outrageous actions during her hiatus from Baywatch.
Cody ignores regulations and leaves his tower five minutes early to meet Lani for a hot date. Right after he leaves, a young woman goes swimming and is engulfed by a wave, never to reappear. Cody is tortured by the results of his negligence.