In feudal Japan, a mother-in-law and daughter-in-law live near the Rajomon gate when a band of samurai brutally attack and kill them. Soon after, mysterious deaths of samurai begin to occur in the bamboo grove near Rajomon, fueling rumors of vengeful spirits targeting warriors. The governor, disturbed by these mysterious deaths, orders a fierce samurai, Gintoki, to investigate and eliminate the threat. Unbeknownst to him, Gintoki is closely connected to the victims, leading to a deeply personal and haunting mission.

Gintoki arrives at the haunted grove and discovers an elegant mansion housing two beautiful women who disclose their mutual hatred for samurai. Disguised as spirits, they seduce and kill high-ranking warriors. A bond forms between Gintoki and the women as he is torn between duty and personal allegiance. As the plot advances, eerie revelations deepen the conflict, blurring the lines between love, duty, and revenge.