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In the near future, a game development company, Cooltron, has developed a love game called "Listening to the Heartbeat". To promote the test game, Cooltron organizes a competition with a special bonus in which Yan Xiao Yu participates. According to the system, she is matched with engineer Ji Yun Feng. The ultimate clearance condition of this game is the heartbeat of both parties.

"There's a past at this house, there's death at this house, waiting will be over at this house." She try to beat her rival because of being betrayed by her lover, decide to spell his spirit to be with her. She use a blood from innocent girl to live as immortal. Waiting for new perfect body of her lover.