Suspicions loom around a serial murder case. Who is the final target?

The vested interests and rising commercial forces come head-to-head seeking power.King Jeongjo puts up a lonely fight to push through radical reforms for the people.

In the capital city of Hanseon, a serial killer roams. But the culprit does not leave any trace and his victims range from commoner to high-ranking officials.

Merchants are opposing market reforms and lobbying heavily to get what they want.

A group of politicians, Beokpa, is struggling to maintain its vested rights of four centuries. They will even attack the king if they have to. Meanwhile, King Jeongjo pushes for transfer of the capital despite strong oppositions.

Officer Park Sang-gyu feels helpless at the realities of life.

Merchant Yang Man-o dreams of changing the world with money. Courtesan Lee Na-yeong seeks revenge. The three young people seek the answer to 'right' life...