In a city where mysterious disappearances occur frequently, Ling Yuan, an ordinary college student, was accidentally selected by a silver light and became the human body of Ultraman Nexus, the "fit". From then on, his life was completely changed. Not only does he have to face the terrifying alien beasts that prey on humans in the shadows, he also has to deal with the suspicion and tracking from unknown monitors and the secret organization "TLT". Between fear, confusion and responsibility, Ling Yuan struggles to grow and learn how to use this huge power that does not belong to him to protect the daily life he cherishes. However, the battle between light and darkness has just begun, and a greater crisis is quietly approaching.
