A village youth gets trapped inside a communist hideout with his home made timebomb and must escape before it goes off.

In the latter years of the Korean Empire, Lee In Hwa, disguises herself as a man so she can join a group of young men determined to overthrow the colonial government. They fight together with young national activists presided by Hwal Min and supported by Daewon-gun, the Prince Regent, against Min Gyeom Ho and his peers. But Min and his team perform a surprise attack on Hwal Min and his peers.