To avoid being sold as a concubine, Luna Linden marries Shane Shaw, a 'silly boy'. Her husband dotes on her, and they fall in love. After an accident, Shane recovers his identity as the Lord Heir, forgets her, and returns to the capital. Heartbroken, Luna plans to raise her child alone. The Lord Heir's love awakens. Learning she refuses to recognize him, he chases after her, vowing to be her silly boy for the rest of his life.