A high school girl named Haruka Kitajima claims to have seen a monster's shadow after school hours while looking for her lost cell phone. With no one believing her story, Haruka turns to her class mate Hiroki Tsuboi for help, as she knows his father works for SG1. As he has feelings for her, Hiroki agrees to help Haruka out but is unable to see his father and give him Haruka's message. Upon learning that Haruka has been transferred to another school the next day, Hiroki goes to her house and finds it completely empty before discovering that he is being stalked by Ryuga. Ryuga confronts him after a PTA meeting, and reveals to Hiroki that Haruka was killed by a Horror that he is hunting down, while advising the boy to leave if he values his life. As he is about to leave, Hiroki is approached by his teacher Ms. Toyama and he reveals to her what Ryuga told him. However, Ms. Toyama reveals that she is indeed the monster that Ryuga was talking about and prepares to eat the boy, when Ryuga comes to his aid. With Ryuga preventing her from feeding on the child, she reveals that she has only eaten students without any future and when Haruka discovered the truth about her, she had to eat the girl and her entire family. With Hiroki knocked out, Ryuga does battle with the Horror, and after donning the Garo armor manages to slay the monster. When Hiroki comes to, he grieves over Haruka's death as he could do nothing to stop it, but Ryuga reassures him by telling him he did all he could. However, Hiroki's father arrives and tries to arrest Ryuga. Hiroki interferes, allowing the Makai Knight to escape. The next day, Ms. Toyama's disappearance is covered up, and Hiroki vows to support Ryuga, even though the entire city is against the Makai Knight.