Oh Haewon, or "Haeddy" as the world knows her, is a 26-year-old composer whose name is synonymous with musical brilliance in South Korea. Haewon is known for her cool, almost icy exterior. Lily Morrow, a 25-year-old soloist of Korean-Australian descent. Lily is known for her cheerful and easy-going nature, a personality trait that has endeared her to fans worldwide When their paths cross for the first time, the contrast between them couldn't be starker. Haewon's mysterious and somewhat intimidating presence is a sharp contrast to Lily's warm and approachable nature. The music world watches with bated breath as these two forces come together to create something extraordinary. Unbeknownst to both, this collaboration will be the beginning of a journey that neither could have anticipated

Oh Haewon, the sole heir to Oh Legacy Corporation and a final-year business student at Seoul National University, is arranged to marry Lily Park Jin Morrow, the eldest daughter of the owner of Morrow Company. This marriage is arranged by their families to strengthen their business ties. However, can they accept this arranged marriage?