Robber Hayashi (Kazuki Namioka) finds a wooden box with a mysterious mark while on the run with his companion Hirata. The old knife inside is a shadowy object, and Hayashi is possessed by the horror Bukeri. Sensing the appearance of Bukeri, Ryuga and Rian meet the director of a nursing home (Nagare Hagiwara) and a woman about to get married, Mina (Anri Sakaguchi), during their search.

The jinga was defeated by Garo Sho = Garo Darkness, who gained the power of darkness. However, he was unable to seal Radan. Ryuga and Lume devise a plan to save Rian, who has been knocked unconscious by Jinga's attack. Meanwhile, Daigo's proclamation is sent to Gardo, who feels responsible for everything and has lost confidence.