Soldier Zhang Wei transformed into Ultraman Galaxy during the exercise and awakened an identity that had been dormant for billions of years. In order to fight against Lucifer and his legion, he and his childhood sweetheart Wei Lai traveled through time and space to find the power of the lost civilization. In the fateful showdown between light and darkness, he faces his other self - Luchiel, the incarnation of darkness, and makes the ultimate choice between protection and destruction. This is an epic of light and darkness spanning the epoch of the universe.
