Gu Huaichuan, a dual master's graduate in finance and law, faces employment pressure and follows his mother's arrangement to work for the Lu family. With a monthly salary of 20,000 yuan and room and board included, he initially thinks it will be an easy domestic servant job, only to discover that every employee in the villa has extraordinary skills. Using his exceptional emotional intelligence and solid academic knowledge, he helps Madam Lu defeat her opponents at the mahjong table, meets the eldest Lu daughter while running errands and delivering meals, and wins over the mischievous third daughter. Through everyday social interactions, he gradually grows and finds his footing.