Ultraman Geed runs into trouble when he is unable to defeat the mechanical menace, Darkclops Zero. Help arrives in the form of Ultraman Zero, but is he willing to see the son of his arch-enemy Belial as an ally?
After Zero and Leito transform to help Geed, the mild-mannered family man suddenly finds the prospect of being an Ultraman exciting. Riku doesn't appreciate the insinuation that being a hero is all fun and games, so the two decide to trade roles to figure out who has it rougher.
After Zero sacrifices his life to protect his friends, it's up to Riku to take on Galactron and protect the city.
Fukuide Kei, the enigmatic sci-fi author, invites Riku, Laiha, and the Igaguri family to a special lecture regarding his newest book. But things aren't what they seem, and it seems to spell trouble for Ultraman Zero.
