Hiroki and Kanata have grown up together from childhood. One day Hiroki becomes involved in a mishap while attempting to rescue a young girl. The next moment he realizes he is staring down at his own body. Cut off from his form, Kanata, and everything else, he strives to understand what is happening.
Why does him find himself outside his body which continues to live as if very unchanged, how can he prove to Kanata that he exists there, and who is the enigmatic girl, Fhalei, who repeatedly ever appears to him?