High school student Hikaru Raido returns to his hometown after seven years of adventures overseas and encounters a mysterious doll of Ultraman Taro.

Hikaru shares his secret with Misuzu, his childhood friend of being Ultraman Ginga; however, the evil monster Kemur now sets his eyes on Misuzu.

The Furuhoshi Primary School, now closed, still means a lot to Hikaru and his pals who cherish their childhood memories.

Misuzu is selected to replace a model who cancels the photo session at last minute; with no experience she tries her best to do the job.

Hikaru talks to Misuzu and Chigusa about the time limit Ginga has while he and Ginga are fused into one.

Tiga Dark, a giant emerges from the dark and stands between Jean-Killer and Ginga.