Harvey is feeding off the local panic, making a small fortune selling ""Creature in the bay"" T-shirts. Just when things start to calm down, the situation escalates when a fishing boat catches something huge in its net, and is pulled underwater by the mysterious entity below the surface.

A fisherman tricks new lifeguard Megan into rescuing him in order to attack her. When he continues to stalk her, Mitch has to find a way to stop him. Meanwhile, when Shauni suffers from lifeguard burnout, Eddie takes her on a romantic weekend getaway, which quickly turns passionate.

Mitch attends his high school reunion, rekindling an old flame with former wife Gail, while Eddie plays father for the day.

Mitch rescues a diver trapped 90 feet below the ocean surface, but almost dies while experiencing the effects of decompression sickness.

Drew shoots at the raft. Shauni is taken hostage, and pushed off the cliff. After Eddie and Mitch save her, she finds out that she's not pregnant. Eddie proposes to her. Mitch climbs down with the help of a rope and finds the golden boot; Jed arrives at the trailer. Eddie marries Shauni and they move to Australia.

A woman from Mitch's past becomes one of his fellow lifeguards and stirs up memories for Mitch; Matt must contend with surfers wanting to take over part of the beach.