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?
It really is a kaiju!
Das ist wirklich ein Monstrum!
¡En verdad es un kaiju!
Un vrai monstre géant !
É mesmo um monstro!