Gwanseok and Heedong are offered a job salvaging treasure off the coast of Korea and head to Mokpo.

Gwanseok and Heedong's gang hunts for the exact location of the sunken treasure.

With the arrival of a new competitor and Chairman Cheon wavering, Gwanseok scrambles for a solution.

Gwanseok and Heedong eventually agree to team up with Professor Kim on the salvage operation.

After seeing the pottery, Jungsook is convinced of its value, and the gang makes their first dive.

The team get their first taste of success, and Gwanseok accepts a secret task from Chairman Cheon.