Korean actor Lee Byung-Hun goes to war in the trailer for his new period action film The Fortress.

The Fortress is set in 1636, when the Chinese Qing Dynasty has invaded Korea with 150,000 troops. The Korean court flees the capital to take shelter in the Namhan Fortress, located in treacherous mountains outside the city. The Qing army, led by General Yong Gol Dae, quickly surrounds the fortress, leaving the king and the court stranded in a prolonged standoff. For a truce, the Qing general makes a humiliating proposal that they send the Crown Prince out as hostage. Unable to move forward or fight the enemy they are outnumbered by, the people of the fortress start dying from cold and hunger. The king now faces an impossible choice between protecting his people and standing up to those looking to destroy them.

Co-starring in the film alongside Lee are Kim Yoon-Seok, Park Hae-Il, and Go Soo. The film was directed by Hwang Dong-Hyuk.

The film will be released in select theaters in the United States and Canada on October 20.