Gwan-seok, skilled at finding money, joins Hee-dong to pursue rumours of a sunken treasure. The two set off in pursuit of a potential fortune.

Gwan-seok and Hee-dong reach Mok-po, facing a rough welcome from Captain Hwang and Beol-gu's gang before they search for the shipwreck's exact location.

The location is still unknown when a rival shows, adding to the race. Chairman Cheon wavers, forcing Gwan-seok to scheme to get him back on board.

Gwan-seok and Hee-dong partner with Professor Kim's crew and set sail. Meanwhile, Chairman Cheon bribes an assemblyman with pottery for favours.

Jung-sook and Deok-san reach Mok-po; she assesses pottery, he seeks Professor Kim. Convinced of the pottery's value, the team makes their first dive.

The team hires more divers, making their first real haul. Gwan-seok takes a secret job; Jung-sook auctions shipwreck treasure at a U.S. military base.

Chairman Cheon makes a big error and Jung-sook jumps to control the company. At the salvage site, an accident occurs and it is Hee-dong's turn to dive.

The ship rises from the deep, pottery in tow in front of Heedong. Men seize Professor Kim; Heedong, eyeing profit, dreams of a grand public salvage.

Under a false government banner, the salvage begins. As Honggi probes the diver's accident, danger near. He gives Heedong key information to survives.