Based on the memoir "Jingbirok" , written in 1604 by Joseon scholar Ryu Seong-ryong (1542-1607), who served as prime minister of the Joseon Kingdom (1392-1910) during the seven-year Imjin War (1592-1598). "Jingbirok" (Book of Corrections) is the name of Ryu's memoir, which looks back on the Japanese invasion under the leadership of Toyotomi Hideyoshi. The memoir covers Ryu Seong-ryong's experiences from 1592 to 1598 during the Japanese invasion of Joseon era Korea. The story takes place in Korea and Japan between the Japanese invasion and the Battle of Noryang where admiral Lee Soon-sin was killed.
