Four Baywatch lifeguards go to San Diego to demonstrate the usage of the scarabs and waverunners to lifeguards in that area. However, Hotel Del Coronado, where they stay, has a legend of a ghost haunting its hallways that Summer experiences. Mitch tries to save his brother, who suffers a heart attack and falls overboard from their sailboat.

A deranged woman with multiple personality disorder becomes obsessed with Mitch and takes him hostage. Meanwhile, Matt confronts his fear of sharks.