A Tokyo college student's discovery and eventual obsession with a stolen handgun awakens something dark inside him. On a nighttime walk along a Tokyo riverbank, a young man named Nishikawa stumbles on a dead body, beside which lies a gun. From the moment Nishikawa decides to take the gun, the world around him blurs. Knowing he possesses the weapon brings an intoxicating sense of purpose to his dull university life. But soon Nishikawa's personal entanglements...