明石幸次（阿部进之介饰）的父亲因告发企业内部的非法行为而被逼自杀，幸次的家庭也因此分崩离析。这时，在儿童福利院工作的北村向幸次伸出援手，在他看来，只要能守护孩子们就算犯罪也在所不惜。在北村另类价值观的影响下，幸次心里燃起了报仇的火焰，人性的善与恶再次交锋……

　　影片改编自直木奖作家伊集院静的同名小说，讲述的爱犬死去的八岁女孩沙耶香（新津世知 饰演），和多年前失去幼小儿子的老人布濑（笈田吉饰演)在交流重要家人离开的心情时，逐渐温暖内心的丧失感的感人故事

　　Aki and Naoko are childhood friends who are drifting apart as adults. Immersed in her family life, Naoko now has a husband and daughter; Aki, on the other hand, remains single and is on leave from work due to a personal crisis. The plot might sound familiar but it has never been told like this. The director Kusano Natsuka stages the interactions through an actors’ table-read and, as the lines are repeated, the scenes gradually develop into on-location conversations. Moreover, she repositions the dramatic peak of the story to the beginning: Aki has murdered Naoko’s daughter.
　　Structurally inventive, Kusano's daring cinema implements ‘distantiation’ effects to get to the heart of friendship issues at times when life has settled. While the repetitions convey the suffocation of role patterns in both friendship and family, a line left out or added in unsettles and reminds us life can take unexpected turns.