The love tragedy of the previous generation created a child with a unique personality and constitution. She could not escape the black environment and the life-and-death struggle. Her life had entered a countdown from the beginning.
A talented young man who is full of ingenuity and is the best in the world;
A cute boy who is sunny, lively and loyal;
A geeky young man with a weird personality and superb medical skills;
There are also boys and girls whose memories were wiped away many years ago. After experiencing a series of life and death tests, can they get closer to the black horizon of nothingness?