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?
To defend the city from that kaiju!
Um die Stadt vor dem Monstrum
zu beschützen!
¡Para salvar a la ciudad del kaiju!
Pour protéger la ville du monstre !
Para defender a cidade daquele monstro!