It tells the story of the sweet assassin Su Xianling and the sinister city lord Dongfang Jingshuangqiang falling in love and killing each other.Su Xianling, a novice who wanted to become a top assassin, snatched an order from a fellow assassin in order to assassinate the current city lord Dongfang Jing. What she didn't expect was that the employer of the order was actually the city lord himself.