Matt is openly unamused by Aussie exchange program lifeguard Logan Fowler's hero complex, nearly running over a drowning man on his way to snatch a female from Matt. Mitch is hitting the breaks on Hobie's maternally sanctioned determination to commit to music. Stephanie has the hots for seismologist Riley Ferguson, but her sister returns homeless after a breakup. C.J. keeps turning up, panicking over a a mild tremor Mitch laughed away.
After Mitch rescues Hobie, he helps Matt commandeer a news helicopter to rescue Jackie from her trailer on the cliff. Hobie also breaks out of his shaken state long enough to help C.J. save the homeless man trapped under wreckage of the pier.
Three months after the trauma of the massive earthquake, Hobie arrives back home after spending the summer in Ohio with his mother, Gayle, who asks Mitch marry her again in a formal ceremony on the beach. Everyone is delighted, except for Stephanie who still has feelings for Mitch.
Former Baywatch lifeguard John D. Cort once again arrives back at Baywatch and asks Mitch to enter with him in a dune buggy race in Mexico. But Mitch is unaware that Cort wants to use the race to smuggle rare artifacts into the U.S.
Mitch and Stephanie are partnered for a 24-hour shift on a busy day where they help out each other with accident victims and even try to rekindle their lost romance once again. With his father away, Hobie falls for a new girl from his school and throws an ill-advised party at the house just to impress her. The next day, disaster narrowly avoids Hobie when he tries to stop two of his wild friends, J.B. and Connor, from flying Mitch's hand glider off a cliff.
During junior lifeguard training sessions, Matt deals with Hobie's newest friend, Carter, who is ashamed of his father, Simon, who happens to be a dwarf.
Mitch works with an FBI agent, posing as a lifeguard, stake-out a dangerous criminal. After Matt rescues a Dutch woman, she intends to repay him with her servitude, which evokes jealous in C.J.
A radio DJ leads a contest for hidden treasure on the beach, which brings a flood of treasure hunters to the beach- including Matt and C.J. who are swept up in the frenzy.
The Santa Ana Winds usher in some strange times for the lifeguards as Caroline helps an insane man who swears his daughter drowned in the ocean, while Mitch is tormented by a meek man, whose fiance remains infatuated with Mitch from a years-ago rescue.
Matt considers fulfilling his dreams of playing professional volleyball when he's given the chance to partner with a pro. Mitch meets the beautiful Tracy, who tries to sell Baywatch a hovercraft. Garner literally chokes when he tries to sing in public. C.J. protests oil drilling in the bay and the lifeguards must rescue the drillers become trapped underwater.
As Christmas nears, Mitch and Tracy fall in love. Mitch and Hobie let a lost boy stay with them during the holidays, only to discover he's a con artist. C.J. believes a priest has developed romantic feelings for her. Matt suspects that a group of vacationing little people are really Santa's elves.
At Christmas, Mitch tries to reunite Joey with her mother; C.J. worries that a priest is leaving the church for her and Matt investigates whether Santa's elves are really vacationing at Baywatch.
Logan and his friend Gator are determined to beat Matt and Barnett in a rubber ducky contest so that Logan can win the cash prize and not have to marry a rich widow to stay in the country. Mitch's new relationship with Tracy comes under the scrutiny of his disapproving mother but Tracy hides a secret from Mitch.
Stephanie returns to Baywatch only to become victim of an ultraradical eco-terrorist trying to destroy an offshore oil platform. Mitch makes waves in Garner's relationship with a new lifeguard.
After learning Tracy's dying, Mitch intends to make their last moments together count but tragedy cuts short their time together. Logan and Caroline try to stop a pair of reckless wave runners from cauing harm on the beach.
In an homage to the movie Sleepless in Seattle, Hobie tries helping his grieving father deal with Tracy's death by calling a radio station for advice, and a woman listener in another city decides to contact them. Caroline rescues a swimmer with AIDS, causing problems between her and Logan.
Logan is traumatized by a phobia from his past involving his late father and fire. Mitch discovers that his late father was actually proud of his career as a lifeguard.
Mitch's friend, a sheriff and part-time lifeguard, causes trouble when he uses strong-arm tactics on the beach. Logan annuls his marriage of convenience, putting his future at in the U.S. and Baywatch at risk.
John D. Cort, returns to Baywatch, homeless and depressed, but finds a purpose for living when the potential donor of a young leukemia victim is reported missing.
Caroline tries to help a Chinese immigrant woman stay in America after the woman escapes from an illegal refugee boat. Garner and Matt try to stop a beautiful con artist rip off beach goers when she exposes too much.
Kaye hires a an aspiring English pop singer as a waitress and discovers she's a runaway. A daredevil attempts to set a new world's record water skiing behind a blimp. Stephanie questions Caroline's ability as a lifeguard.
When a stunt show lead by Johnny Danger comes to Baywatch, Hobie and his friends are intrigued by Johnny and his motorcycle stunts. But Mitch and Garner are concerned after finding out that Johnny Danger encourages teen-age drinking. Meanwhile, Neely Capshaw, an attractive new lifeguard, arrives at Baywatch and is assisted by Matt. But when Matt discovers that Neely is a alcoholic who drinks while on the job, he reports her to Mitch.