You enter a small abandoned house on the hill in the cover of night. Once you enter, you see a shrine, you approach it and open to see what's inside. You open it to see a strange relic along with a toy of Ultraman that you haven't seen before. That's weird, why would a shrine house this relic and a toy of an Ultraman that doesn't exist? Then from behind you hear a voice

Ultraman Taro: "That relic you're holding is called the Ginga Spark. And the doll beside it is Ultraman Ginga."