One spring ten years ago, it should have been sunny and sunny, but it was the beginning of Feng Chen's nightmare.
It was this spring that his beloved mother was killed, and he just watched his mother slowly die but could do nothing. That year, he was ten years old. . .
He didn't know who killed his mother. He only knew and remembered the figure who turned away after killing his mother. He always remembers this back, so that one day he can avenge his mother.
Ten years later, a young detective appeared in everyone's sight. He is the boy from ten years ago, he is back for revenge!