Baywatch: Hawaiian Wedding (2003) on Netflix

Plot summary

Allison Ford so resembles Lt. Stephanie Holden, Mitch Buchannon's old love, that the lifeguards who meet her at Baywatch notice at once. Mitch has recovered in a Los Angeles hospital from amnesia suffered in a boat explosion, and he is engaged to Allison. Taylor Walsh runs Baywatch headquarters now, where J.D. and Leigh Dyer are a couple, and Hobie Buchannon is seeing Summer Quinn. C.J. invites the old crew to Hawaii, where she is opening a bar and grill, and Mitch books his wedding there. Caroline Holden, now an actress, is already on the island, and Neely Capshaw arrives set on winning Mitch back. His old nemesis Mason Sato photographs Mitch's loved ones to plot revenge.