Xia Nuanxin was mistakenly mess with the boss of underworld, Xiao Jue, in a task, which led to the failure of her task. In order to revenging, she sneaked into his company, but accidentally fell into his trap and was forced to promise to be his assistant for a month. During the work, Xia Nuanxin still don't give up any opportunity to complete the task. Xiao Jue didn't know the identity of Xia Nuanxin, but only felt funny to tease her. So he had been keeping her to stay around with him.