Yuta Hibiki wakes up in the home of his classmate, Rikka Takarada, with amnesia. A voice from an old computer, identifying himself as "Gridman," has a mission for him, but can he even survive the next day of school without his memories?
Yuta, hurry. There is danger
closing in on this world.
Yuta, du musst dich sputen!
Diese Welt schwebt in Gefahr!
Yuta, apresúrate.
Un peligro se acerca a este planeta.
Yûta, presse-toi.
Une menace pèse sur ce monde.
Yuta, rápido. Há um perigo
se aproximando do mundo.