This story is set on Earth where kaiju and aliens are entirely unheard of.

Kosei Hoshimi is a part-time worker at a warehouse. There, he meets a mysterious man who has lost his memory.

Whilechasing the suspicious man, Kosei encounters a giant life form rampaging through the city.

The man calls this giant being a“kaiju.” He then is veiled by a dazzling light and transforms into the crimson giant, Ultraman Omega!

The man later takes on the name Sorato Okida. He along with Kosei and the young biologist, Ayumu Ichido face on the “kaiju” - an extraordinary life form on Earth.

Sorato, even without memory, fights as Ultraman Omega. Kosei supports Sorato by using the Meteokaiju. Ayumu along with the other two, gets closer to uncovering the truth about kaiju.

Why do kaiju appear? Why does Ultraman Omega protect earth?

When humans on earth are forced to face these extraordinary beings before their eyes what thoughts come to mind and what actions will they take? The adventure to find the answer begins now.