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.
Because only Hibiki and Gridman
can protect my friends.
Nur Hibiki und Gridman können
meine Freunde beschützen.
Porque sólo Hibiki y Gridman
pueden proteger a mis amigos.
Seuls Hibiki et Gridman peuvent
protéger mes amis.
Porque somente Hibiki e Gridman
podem proteger meus amigos.