No one knows how a suit of samurai armour ended up in the Fort Smith museum. When a mysterious stranger turns up to claim it, Sonny, a young Tłı̨chǫ Dene boy, is eager to help. Shinobu has travelled to Fort Smith, NWT, to reclaim his grandfather's samurai sword and armour. But when he discovers that the sword was lost in a poker game, he must confront the man known as Benny the Bank. Along the way, Shinobu must rely on unlikely heroes-Sonny, his grandmother, and a visitor from the spirit world. Together, they face Benny and his men, including the giant they call Flinch. Will Shinobu be able to regain the lost sword and, with it, his family's honour? Can Sonny and his grandmother help Shinobu while keeping the peace in their community?