Sam, Neely and Caroline investigate a military jet containing a virus that crashes into the ocean; C.J., Cody and Newmie try to shut down a nude beach.

After rescuing two people trapped on a rock with a gunshot sea lion, C.J. and Cody transport the injured mammal to the animal recovery facility at Sea World in nearby San Diego, where C.J. develops a bond with the mammal she names "Leo." Also, Samantha plans to promote lifeguarding with a Baywatch-theme stunt show at Sea World. Meanwhile, Mitch and Jordan track down the fisherman and his cronies responsible for the sea lion shootings, who are also illegally fishing with explosives.