Seeking the truth behind the "Biscatonic Cluster Incident", which claimed an unprecedented number of victims and turned Death Gavan evil, Gavan Infinity —Reiji Doki— sets out for Planet Alkam, one of the planets where the incident took place. There, Gavan Raiya —Kunai Kazanami— who was tracking Death Gavan’s whereabouts, also appears from across dimensions…

Negative Emorgy emanating from MultiEarth A0073 coalesced into a massive void that swallowed the sun. The world lost its light and was engulfed in deep darkness. The most formidable enemy, Gavan Killer, who aims to annihilate all Gavans, pushes Reiji and his friends into an unprecedented life or death situation.

Use the Gavarion Trigger to Jo-Chaku! You too can master "Jo-Chaku"! Be sure to check out Gavan Infinity's battle too!