在这部河畔剧情/犯罪片中,女高中生若草（二阶堂富美 饰）因为帮助被前男友观音崎（上杉柊平 饰）霸凌的同级生山田一郎（吉泽亮 饰）而在河畔发现了尸骨。若草通过山田认识了名模学妹吉川（浅野堇 饰），吉川学妹和人前不同，常常暴饮暴食后再吐出来、她也共享着河畔腐烂的尸骨的秘密。而一郎暗恋着的同学其实有女友，交错的故事谣言的产生，直到最后竟多出了一具新的尸体......
Haruna is a high school student whose, school-mates, school and life is topsy turvy and often tragic. One of her classmates is the homosexual Ichiro. The boy is often bullied, derided and beaten. He has the scars to show for it. Haruna stands by Ichiro's side and comes to know Ichiro's secret. Then they discover a corpse by a river beside the tall grass.
致山田这样的男生。演员的身体是属于电影的，二阶堂也不例外。冷静的极限。二阶堂富美的突破演出，献给一曲青春悲歌。世间怎么有如此美丽的事物…。接纳自我，是一生的功课。我很好。我看到的《河畔》。致青春（简评，リバーズ・エッジ）。一出重口味青春残酷物语。
