The protagonist Luo Xin is an ordinary boy. When he was fifteen years old, his mother died mysteriously. In the following time, strange dreams, strange black cats, strange men in black and other strange things appeared one after another. Just when he decided to start investigating all this, he found clues He was cut off in advance and attacked by a mysterious man in black. Later, he and his classmates fought openly and secretly with the mysterious enemy. After paying the price of losing the love of his youth, he finally unlocked the secret of all this, and the truth was so heartbreaking. . . .