When he woke up, Qi Guanyi found that he had traveled to the world of Ultraman, and accidentally merged with a mysterious Ultra warrior named "Yuan". Facing a familiar plot and an unknown future, he decided to rely on his foresight and the newly awakened system to make his way in this world as "Ultraman Source". Not only does he have to fight monsters, but he also has to hide his identity in the human defense organization Xio, fight side by side with the protagonist Daichi Daiku, and step by step uncover the secrets of his time travel and the life experience of the "origin" Ultraman.
