On Earth, an alien falls from the sky. Taking human form and the name "Sorato", he becomes interested in the "Earthlings" and attempts to understand them. As kaiju continue to appear before him, he transforms into "Ultraman Omega".

Shori Kondoas Sorato Okida / Ultraman Omega
Haruto Yoshidaas Kosei Hoshimi
Ayano Kudoas Ayumu Ichido
Mirai Yamamotoas Sayuki Uta
Shunichi Makias Masa-san (voice)
Megumi Hanas Remi-chan (voice)
Hideyoshi Iwataas Ultraman Omega
Ryô Kinomotoas Narrator (voice)
Sakura Okamuraas High School Girl
Mai Hiranoas Miyu's mother
Toshizo Nemoto
Masaya Honda
Norikatsu Kodama