
Twenty years ago -. In the long absence of the Golden Knight Garo, the young Azami (Rin Marumoto) is brought by her foster mother, Houshi Kyado (Yuko Oya), to the Shidouin, a training centre for Marauder Knights and Marauder Houshi. There, under the guidance of Grand Master Sugou (Bob Suzuki), tests were being conducted to select new Garo fighters. The candidates "13" (Kyoya Honda) and "55" (Naoya Kitagawa), who had been recognised for their qualities, studied hard day by day in order to become the "Guardians". Finally, they face their final challenge.
Sona Soraton (Koya Matsudai), a university student, and his best friend Shouri Hoshiai (Naoya Shimizu), a gamer, are leading an ordinary life. One day, they receive a rumoured VR game, and when they activate the VR glasses, the area is transformed into a giant game field, where 100 players have gathered. The guide, Shukai (Momotsuki Nashiko), tells us. The players are told to fight for the Garo armour that shines above their heads, and if they win, they can get whatever they want...