To secure a better future, Kang Ingu goes to Suriname to run a fishery with a friend. It’s all smooth sailing until he falls into a trap and ends up in jail. A government agent comes to Ingu's aid — but in return, he must help reel in a drug lord.

In 1862, amidst the rule of the late Joseon dynasty in Korea, a band of fighters named Kundo rise against the unjust authorities.