性格激进的奈留美（菜叶菜 饰）和性格温和的圭（中村邦晃 饰）是姐弟俩。自从幼年双亲事故过世之后两人相依为命。奈留美因殴打同事被判入狱，服刑期满后，奈留美出狱回到家中，发现圭和女友加奈（菅原佳子 饰）同居在一起。她决定把弟弟夺回来，她告诉了加奈一个自己和弟弟之间的秘密……

　　这是青年女性导演小栗春日25岁时的作品，主演菜叶菜凭借此片获得2011年夕张国际FANTASTIC电影节最佳女演员奖。

Narumi, who has an aggressive personality, stabbed her colleague and went to prison. After serving her time, Narumi is released and goes back to her hometown where she grew up. Narumi goes to her younger brother Kei's home. At a young age, their parents died in a accident and Kei is the only one left Narumi can rely on. After Narumi sees Kei and his girlfriend Kana living together happily, Narumi decides to take her brother back. Narumi reveals a secret between her and Kei.