Tokyo detective Aoki is devastated when influence and power undermine a major investigation. Unwilling to let go, he is sent to a remote Japanese retreat in the mountains for a vacation. His stay quickly becomes a hotbed of suspense as Aoki realises that all the guests are harbouring secrets. A sudden snowstorm traps everyone just as Aoki begins to piece together each guest's connection to an unsolved disappearance years prior. Trapped by the snow, the retreat becomes a maze of stone walls, the scene of a geisha's seduction and bloody murders in the night. Before long, Aoki realises that his earlier investigation and the unsolved disappearance are part of a larger scheme and he msut escape the web of deceit before it closes around him.