Follows a pair of siblings who love but distrust each other as they embark on a white-water rafting trip with a small group. One of their friends from childhood turns out to be more dangerous than he appears.
Haruka被毫无疑问的冠军Albert的游泳所俘虏,感觉自己迷失了方向。鉴于目前的情况,他的游泳以及水对他意味着什么都受到了质疑。