Mysterious disappearances occur one after another in the city, and terrifying alien beasts are hidden behind them. The ordinary data analyst Zhi Xinghe was involved in a battle in an accident. When he was about to die, he was selected by Light and became a qualified candidate for Ultraman Nexus. While hiding his identity and avoiding the pursuit of the mysterious organization "Night Raid Team", Ling Xinghe must face the evolving and increasingly ferocious alien beasts alone. Can he protect mankind in this desperate battle and find the true meaning of choosing himself? This is a battle of courage, bond and legacy.