Olive Kentworth has spent her life hiding her interest in architecture, even though she pores over architectural books and sketches buildings. When she accepts a job on a home expansion, it's only because her cousin Amos agrees to pose as the builder. To further hide her involvement, Olive takes a position as a nanny-not knowing that she'll be working for her idol, Joplin's leading architect, widower Maxfield Scott. Maxfield is intrigued by his new nanny-she makes his home and his life bearable again. His work, on the other hand, is a disaster. An untrained builder is remodeling a completed project of his. What's worse, Maxfield's current client wants changes to his plans because of that builder's work. As the architectural one-upmanship heats up, Olive's involvement becomes harder to hide. Will the relationship between her and Maxfield survive, or will they both miss out on building something for their future?