In an accident, the ordinary college student Qi Yelan was involved in the remaining consciousness of the space demon Ultraman Beria and became his new human body on earth. From then on, his life completely changed. On the one hand, he has to fight against the monsters and cosmic beings that are constantly attacking the earth; on the other hand, he has to resist Beria's dark power full of temptation and the whispers that erode his mind. Caught between light and darkness, Yelan must find his own path and decide whether to become a hero who protects the earth, or to be swallowed by Beria and become the new king of destruction. This is an epic about human nature, power and choice.