At The Cusp Of The Founding Of Joseon Dynasty, An Envoy From China Is Delivering Emperor’s Ming’s Royal Seal. But Nature In The Form Of A Giant Whale Intervenes And Swallows The Royal Seal. When A Generous Reward Is Offered To Whomever Can Retrieve The Royal Seal From The Belly Of The Whale, The Race Is On. A Group Of Mountain Bandits Led By Jang Sa Jung And A Group Of Pirates Led By Yeo Wol Go After The Lost Treasure, But Who Will Get To To It First?