Jiang Xingyu becomes the assistant to Ji Xiuyuan, a notoriously picky CEO. However, during their very first meeting, Ji Xiuyuan mercilessly exposes her for wearing counterfeit designer clothes. Furious, Jiang Xingyu calls him a dog. Little does she know that Shen Ersi, an auditor from the Wish Delivery System, accidentally makes her wish come true and actually transforms Ji Xiuyuan into a dog. He can only turn back into a human after half a month. Since Jiang Xingyu is the only person who can understand him in his canine form, Ji Xiuyuan has no choice but to sign a contract with her, asking her to take care of him and help him with his work during this period. Thus begins a fifteen-day journey of mutual support and redemption between a woman and a dog.