The film is based on the "Hansando Naval Battle" in which the Joseon navy defeated the Japanese navy on July 8, 1592, near Hansando Island. It is scheduled to start filming in the second half of the year. Ok Taec-yeon plays Lim Joon-young, a Joseon navy soldier who works hard to save his country. Other cast members of the film include Park Hae-il and Byeon Yo-han.