In an alternate history, following World War II, civil unrest and terrorism run rampant in a devastated Japan under foreign occupation. During a botched interception of underground munitions being transferred by a terrorist organization, Constable Kazuki Fuse, a soldier in an elite counter-terrorism unit, witnesses the true terror of human nature. He fails to prevent a teenage girl from carrying out a desperate suicide bombing that subsequently causes immense destruction to Tokyo. With mental scars and his competence under question, Kazuki is sent back to the military academy for re-evaluation. Unbeknownst to him, he will soon be caught up in a web of government conspiracies that have the power to determine the future of all of Japan. Jin-Rou is a heart-wrenching tale of a man treading the fine line between human and beast, ultimately discovering to which side he truly belongs.