Rescue: HI-Surf Show Summary, Upcoming Episodes and TV Guide

Christmas cheer is in the air as the lifeguards prepare for their annual holiday toy drive. While surfing, a local grandpa has a heart attack and is rushed to the hospital, and Hina and Kainalu receive the responsibility of babysitting his grandkids. Sonny tells Laka he is not ready to become a lieutenant, and Laka does not take the news well and spirals at a bar. Chief wants Kenji to replace Sonny as Captain, but Sonny is stern on recommending Em and calls in a final favor with Mayor Emerson. Meanwhile, Will and Em almost get caught in the act by friends, and Hina and Kainalu become more than roommates.

Will, Laka and Em receive a call to rescue an influencer in a wedding dress that gets swept into the ocean while trying to film a new video. Kainalu and Hina discuss setting boundaries within their home, and Mayor Emerson makes good on his word with Captain Sonny. Meanwhile, Will breaks it to Em that his fiancé does not want her invited to their wedding, and Jenn finally agrees to go on a date with Laka.

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.

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

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.