Iris, the daughter of a marquess, finds herself in an unexpected marriage with Lord Lucas, a wealthy merchant aiming to learn high society etiquette. Despite her initial reluctance, Iris offers to assist Lucas, who sees her as plain and unremarkable. As their unconventional relationship unfolds, Lucas begins to feel a growing attraction towards the dedicated and supportive Iris. This romantic comedy, born from a marriage of convenience, delves into the complexities of their evolving connection.