The Valehart sisters were set to marry two heirs from House Ashbourne. A heavy storm and hidden house markers caused a fatal mix-up on their wedding night, leading soft young Celia to share a night with cold lord Alaric of Whitekeep. The two families swap their marriage contracts right away, making Celia Alaric’s legal wife. Gradually, the innocent girl melts the stern noble’s heart, while sharp elder sister Seraphine accidentally spends the night with second son Lucien and falls for him after constant bickering. When Celia is humiliated by rude relatives at a feast, Alaric kneels down to clean her stained shoes to defend her. Initially disapproving of Celia, Duke Cedric changes his mind, and he and his wife resolve decades of hidden marital misunderstandings. Both mismatched couples overcome obstacles and end up in happy marriages.
