In 2009, Yamato Narumi (Sota Fukushi) is a 3rd grade high school student in Nagasaki, Japan. Yamato and his friend Miku Odagiri (Kyoko Yoshine) find an old man, Akira Shoji (Teruyuki Kagawa), stabbed and lying in the street. The old man tells Yamato that his father is the criminal in the 300 million yen case. That night, Yamato’s father, Tetsuya (Toshiaki Karasawa) disappears and 3 days later his body is found drowned in Tokyo. Yamato and Miku find themselves caught in a whirlwind centered around the still unsolved stolen 300 million yen case from 1968.