该片以北海道洞爷湖的中岛、东京伊豆诸岛的八丈岛、大阪的堂岛为舞台，围绕作为故事重要存在而登场的“玲子”的内心纠葛，讲述了心灵受到创伤的三个人的三个故事

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. One day, the daughter comes home from the mainland, seemingly pregnant but unwilling to explain.

北海道・洞爺湖。マキは次女・れいこを亡くして以来、女性として生きてきた。東京・八丈島。妻を亡くした誠のもとに、妊娠した娘・海が5年ぶりに帰省する。大阪・堂島。元恋人の葬儀に駆けつけたれいこは、レンタル彼氏の男から声をかけられる。