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Sanae is a thirteen-year-old girl who lives with her mother and six-year-old sister. She has not recently been able to be open with her fisherman grandfather. Sanae is awoken by the sound of hard rain one night. As she dozes, the rain changes into the flow of the river and she finds herself lying in a fishing boat when she opens her eyes. She hears, from far away, the strains of a harmonica which her grandpa loves... Next morning Sanae is informed that her grandfather has passed away. Frictions are revealed between Sanae and those around her. In her confused state, she runs out of the house leaving for the river where her grandpa's boat is moored...
Editor
Kohei and Akira are a couple running away together without a destination. They meet a geology researcher namend Shiraki on the way and the three visit a log cabin of a famous geologist Kanbe. With fortune teller Eiko, ex-girlfriend of Kanbe, joining the party, five people of diverse ages, sexes, statutes, and professions happen to spend a night together in the log cabin deep in the mountains. As the strangers get to know each other and grow closer, each one of their hidden pasts is brought to light. Meanwhile, following a thunderstorm and an earthquake, something even worse is approaching them...