Synopsis

On her day off, Sakura Michika (Toda Keiko) participates in a waterfall meditation tour and accidentally discovers the corpse of a mountain ascetic practitioner floating up from the waterfall basin. The body had been dead for about a month, and the victim had been strangled by someone before being abandoned upstream, flowing downstream until getting caught on driftwood at the bottom of the waterfall basin, where it had been submerged underwater for some time. Itomura Satoshi (Kamikawa Takaya), who rushed to the scene, becomes interested in the strange piece of evidence after hearing that there was only a single bird feather found inside the wicker basket that the corpse had been carrying on its back.