Makoto is doing his best to raise his 7-year-old son Kazuki. Despite his best intentions, the violence that was once his life comes back to bite him, and he will have no choice but to face it, before the eyes of his son, who he always tried to protect.

Horitoshi Sensei is one of the last accomplished masters of irezumi, the art of traditional Japanese tattoo. Pascal is a young French journalist specialized in tattoo who discovered Horitoshi’s designs in a magazine and felt in love with them. Although he does not have much money, Pascal decided to go to Tokyo to have all his back tattooed by Horitoshi. When the film starts, he is at his fourth trip, but his tattoo is far from being finished. Pascal is our guide in this travel to discover irezumi.