After a one night stand with a stranger to get over her Ex-fiance, Sophia reluctantly attends a destination wedding on a luxury cruise, only to find out that the groom is her ex-fiancé Derek. Embarrassed and heartbroken, she befriends the cruise's mysterious captain, Saint, who is secretly investigating a crime syndicate tied to the groom's family. As they grow closer, Sophia learns the captain's true identity. Saint is a royal heir on a covert mission. Who is the stranger from the one night stand?Would she risk her safety for love? Would her ex be arrested or killed?