High school student Yuki suffers from a chronic disease and has lost hope for living. One day she has a life-changing encounter with Aki, her destructive classmate with a beautiful singing voice. Together they decide to form a band with Yusuke who secretly has feelings for Yuki.
Koichi takes care of his sister, who has recently returned from a trip abroad in the United States as she is not well. While caring for her, he records evidence of ghosts in their home.