By the side of the eldest miss of the Shen family, there is a young professional butler named Gu Yanshen. With his rigorous working attitude and rich management experience, he helps the Shen family handle daily affairs and also guards the order of the eldest miss's life. As people around him join in, Gu Yanshen faces the collisions of different concepts and working methods, resolving misunderstandings and difficult problems time and again with his professional ability. From living arrangements to important affairs management, he always adheres to principles, being serious and responsible. In test after test, everyone gradually understands the meaning of professionalism and trust, and also witnesses the growth and responsibility of a professional butler.