After proposing marriage to Joanna, Paulo takes her to the beach, knowing that she loves swimming. He also encourages her to go free diving while he joins his friends for an exciting ride with his newly acquired heavy bike. One of the riders happens to be a very sultry woman named Vivien. Soon, Paulo finds himself in ecstasy as she gives him a different kind of ride. Meanwhile, Joanna takes free diving lessons from an extremely hot instructor named Robert. Joanna’s repressed sexuality is awakened and boldly lets Robert dive into her.