The male protagonist Shao Luan and his sister Shao Ya depend on each other. The male protagonist meets a girl in a dream. On the next day, the girl turned out to be a transfer student and became the male protagonist's deskmate, and unlocked the seal on the male protagonist, allowing the male protagonist to possess the Zuoyu Chain Blood Hand. At this time, the girl slowly fell in love with the hero, but the hero's sister Shao Ya also fell in love with the hero... The choice began...