Hokkaido, Japan: An old woman -- formerly a man -- lives by a lake in the northern reaches of Japan, gazing at Nakajima Island in its center where her daughter's body was found long ago. She hasn't been able to visit for almost 50 years. Tokyo: A middle-aged man lives on an island where criminals were once exiled in the past, earning a sparse living as a cattle herder. He is descended from such exiled criminals. He raised his only daughter by himself after losing his wife in an accident. Osaka: A woman who was sexually assaulted as a child comes to Osaka for the first time in a while to attend the funeral of her ex-boyfriend. As each of these women board ships and separate themselves from time and locations, the emotional scars and sins they carry become apparent.