To Joanna, the girls' school she was abandoned at is her home. But when she turns nineteen, she has to become independent and takes a job as a governess. Saying goodbye to her friends and teachers is hard, but she hopes to experience the warmth of a home at her employer's manor. However, she's constantly insulted by the girls she teaches once she arrives. One day, she attends a ball as a chaperone and is saved from a dilemma by majestic nobleman Luke. She falls for him, a man who treats her with kindness despite her social status, but he is looking for a wife to give him an heir to continue his dukedom's lineage and is far beyond her reach...