Ka'enaaloha Watson

Higgins' therapist hires her to take a closer look into why one of her teenage patients died of suicide.

Captain Sonny Jennings and his core team of lifeguards monitor the dangerous Hawaiian waters; new lifeguard recruits compete to join Sonny's district; Sonny and his family grieve after the loss of his nephew; Em reveals a romantic past with Will.

A flash flood sweeps a young tourist away from her family and out to deep sea; going against Sonny's wishes, Em takes a bold risk and places her own life in danger in hopes of rescuing the lost-at-sea tourist.

The lifeguards of the North Shore experience the most dangerous ocean conditions the district has seen in years; Sonny assigns Laka as acting lieutenant; Kainalu's father pressures him to leave his shift and help him with his campaign.

The North Shore community come together for Rocky's paddle-out; Hina thinks about switching districts; Laka, Will and Kainalu try to save a beachgoer that accidentally speared his own foot; romance heats up between Sean and Em.

Hina and Kainalu assist the US Coast Guard in searching for two missing snorkelers left behind in the middle of the ocean; Sonny takes matters into his own hands about Vince; Em receives a job offer from a wealthy person.