Investment elite Pei Shu faces high work pressure and unexpectedly welcomes a new tenant, Lin Muye, starting a co-living life. She does not know that this gentle and considerate tenant is precisely the president of her business rival, Hanhai Capital. Lin Muye disguises himself as ordinary to approach Pei Shu, acting as a docile tenant at home while secretly competing with her in the market. Feelings brew through day-and-night companionship, but the identity lie is eventually exposed by Pei Shu, and the deception brings a huge rift. The two transform from intimate lovers back to tit-for-tat business rivals; after going through confrontations, quarrels, and struggles, they cast aside money chips and finally put down their disguises, forging a love alliance of mutual equality in career and emotion.