Yuta and his friends attempt to unravel the mystery of the city and everyone else's memories. However, more questions arise when a strange samurai arrives and tries to tamper with Gridman.
Gridman?! You know him?!
Kennen Sie Gridman etwa?
¡¿Gridman?! ¡¿Lo conoces?!
Gridman ? Vous le connaissez ?
Gridman? Conhece ele?