Hyeong Gu, a young Korean, visits Japan by boat three or four times a month to help with middle-aged Bo Gyung’s smuggling business. It is always Tooru, a young Japanese man, who welcomes him there. Hyung Gu and Touru sacrifice themselves for the sake of their families, money, and friendship. One day, Bo Gyung orders them to kidnap a woman named Ji Su and take her to Japan, and this changes their future in an unexpected way.