TV.com

Caroline Holden, Stephanie's sister comes to Baywatch. She meets Stephanie when she falls off some rocks while watching Stephanie when she is testing a new wave-runner. She tells Stephanie that she is engaged to a man named Frank Randall. He is an environmentalist, and dives looking for pollutions. When he is collecting underwater soil samples, he is attacked by two men. They force him to reach the surface at high speed. As a result, he gets the decompression sickness and ends up in a decompression chamber, clinging for his life. Caroline is devastated and tells Stephanie to go to Frank's house and get her some clothes.

When Stephanie is at Frank's house, a man breaks into the house and looks around while Stephanie hide herself on the balcony. Stephanie tells Caroline about the break-in and Caroline tells her to go and visit Frank's partner Jordan Stewart and see if he knows anything about what Frank was doing in the water. He tells her that Frank worked alone a lot.

Later when Stephanie is sitting by the chamber, Stewart and a doctor enter the room and plan to open the chamber. However, Stephanie recognizes Stewart's watch from the break-in and stops them. She goes to the place where Frank was attacked and tries to find what he were looking for.

Meanwhile, Brady has recovered and threatens to kill Mitch. However, the lifeguards has located the boat and Debra and Brady try to escape. Just then, Mitch manages to jump onto their boat and forces Brady to stop. Afterwards, Barnett tells Mitch that Stephanie might be in trouble. As it turns out, he is right as Stewart's two goons are attacking her under water. However, Mitch and Newmie come to her rescue just in time. Finally, Frank recovers and wakes up.