Em works to earn the team's respect when she is left in charge and Hina and Kainalu juggle multiple beachside emergencies; Will's fiancee pays him a visit at work; Sonny opens up to a former lifeguard about his trauma since losing his nephew.

Sonny, Em, Will and Laka look for missing paragliders that were pushed into the ocean by a down draft; Kainalu invites Hina to a party with his ex-girlfriend; Jenn doesn't think Laka is serious enough for her; Sonny puts in his notice to retire.

Em and Will's relationship struggles as they navigate the return of his fiancée; Kainalu asks Laka for help; the team races to rescue a group of locals involved in a serious accident while riding an inflatable Supsquatch.

Captain Sonny and the Ocean Safety team face their most dangerous rescue yet when a literal minefield is discovered on the ocean floor. Meanwhile, on the beach, a hugely popular influencer will do anything to capture viral content for her massive following.

Hina and Kainalu assist the US Coast Guard in searching for two missing snorkelers left behind in the middle of the Ocean. Meanwhile, Captain Sonny takes matters into his own hands about Vince. Will and Julie meet for coffee and Em receives a job offer from a very rich person. Laka and the team attend Ocean's graduation party.