When the Tsutsujidai High School Festival is threatened, the Gridman Alliance must decide how to proceed. Some of them wonder if fighting is the only choice they have.
Now's when we put our powers together!
Die Zeit ist gekommen,
um unsere Kräfte bündeln!
¡Ahora es cuando juntamos
nuestros poderes!
C’est l’heure d’unir nos forces !
É agora que combinamos os nossos poderes.