어느 여름날 밤에

In the winter of 2013, Yong-jun and Jae-sung, a member of the Korean People’s Army, are caught having sex by a superior. After that, Yong-jun decides to defect from North Korea to the South leaving Jae-sung behind. Yong-jun risks his life to step on the land of freedom and meets Tae-kyu. Two years after, Jae-sung comes over to the South, and Yong-jun must decide between Jae-sung and Tae-kyu. This causes misunderstandings and puts them in pain.