Takayuki is an elementary school teacher in Tokyo. He is seized with Behçet's syndrome, and will gradually lose his sight. He resigns from his job and leaves his girlfriend, Yoko (Yuriko Ishida) to return to his hometown, Nagasaki, where his mother lives. Takayuki spends his days strolling around Nagasaki, to imprint familiar scenes on his memory. Yoko visits him and insists on staying. Takayuki has major concerns for her future, and his own life. He drives her away, for her own good. After days of affliction, the two reunite. The story leads to an emotive conclusion, the end of his spiritual journey.