Kenji, abandoned by his mother, scrapes out a meager existence doing odd jobs, taking care of the sister of an old friend in jail, and helping a young illegal immigrant. But his life reaches a turning point when he happens to meet Chiyoko, his long lost mother. She is now married to Mamiya, the owner of an express package delivery service. They also have a teenage son, Yusuke. Subdued feelings of alarm, discomfort, and resentment between Chiyoko, Kenji, and his half brother Yusuke arise. While Kenji struggles and attempts to escape his fate, Chiyoko seems content to face these issues and find a solution.