The quirky pet communicator vs the cold-blooded CEO of Bingshan Technology, marry first and fall in love later, doting each other on a daily basis. Two seemingly unrelated people are bound together by a "marriage contract" in which each gets what he needs. Living under the same roof, they went from being polite roommates to testing each other, to being inextricably attracted to each other. While dealing with external challenges such as family disputes, business rivals, and troubles from their exes, they healed each other's inner scars and turned a contract into the sweetest promise in their lives.