It tells the story of a virus called blue plague that broke out in the future era. The male protagonist and the female protagonist are a pair of siblings. Their parents died when they were young and they followed a man named Yingzi to wander around. However, soon after they grew up, they broke up with Yingzi and ran away from home. After returning to their hometown many years later, they found that Yingzi had been infected with the blue plague and turned into a terrifying monster. The two decided to find out the truth about Yingzi's infection with the virus after leaving home, and embarked on a difficult journey...
Purpose: Only by facing fear can we find the truth