[5] The second installment in a trilogy following Operation Chromite, the film depicts the September 14–15, 1950 Battle of Jangsari and tells the true story of the 'Independent 1st Guerrilla Battalion' (estimated strength: 718-772) of student volunteer soldiers led by ROK Army officers, including Captain Lee Myung-heum), who staged a small diversionary operation at Jangsari beach in Yeongdeok.

The main mission was to block the supply route and therefore to achieve disruption of the North Korean Army around the Pusan Perimeter by hit-and-run tactics[6] and the secondary mission was a diversion to draw the North Korean Army's attention, to facilitate the success of the Incheon landing.

During the Korean War, 'Independent 1st Guerrilla Battalion' is tasked with staging a diversionary mission at Jangsari Beach in South Korea, in order to deceive the North Korean forces into thinking the opposition forces would launch a decisive invasion there.

[11] Yoon Min-sik from The Korea Herald praised the opening sequence, the subsequent 40 minutes and how the film managed to introduce the main characters and their traits without feeling forced while also depicting the gritty, grotesque face of war.

However, the reviewer felt the plot was "too contrived", Fox's character spelt out the director's message through her dialogue, and that the film started out as something like Saving Private Ryan and ended up along the lines of Pearl Harbor.