New to the workplace, Ruan Chacha is so nervous that she messes up her interview, yet somehow ends up staying on as an assistant to the aloof CEO Ye Lan. Petite and adorable, she has a way of speaking in sugary, faux-innocent tones that people both love and hate. At work, she makes one mistake after another: spilling coffee and losing documents become part of her daily routine.
Yet Ye Lan is unusually patient with her, cleaning up her messes time and again. As they spend more and more time together, Ruan Chacha grows increasingly dependent on Ye Lan, who in turn gets used to having this “little nuisance” around.
Then a crisis suddenly hits the company. Ye Lan is busy negotiating with business partners and stretched too thin, so she neglects Ruan Chacha. Misunderstanding this, Ruan Chacha thinks Ye Lan has grown tired of her. She deliberately gets close to other colleagues and even announces that she's quitting.
Once the crisis is over, Ye Lan finally tells Ruan Chacha how much she missed her and how hurt she felt. The misunderstanding is instantly cleared up. Their hearts draw closer and closer until they fall in love, beginning an office romance that everyone envies and writing a love story of their own.