Rinha is the darling of the Korean entertainment industry, a top-tier actress known for her beauty and talent. But her glamorous life comes to a screeching halt when a filming accident transports her to the mysterious Kingdom of Iklein. Stranded in a frozen forest and saved from a demonic beast by the stoic Archduke Calcion Lanbird, she is offered a lifeline: he will help her return to her world if she agrees to play the role of his lover.
The Archduke is on a mission to uncover the truth behind the murder of his former fiancée and a brewing conspiracy among the nobility. He needs a partner who can navigate the treacherous waters of high society without flinching, and Rinha fits the bill perfectly. However, the plan hits a snag immediately—while Rinha is an acting genius, Calcion is hopelessly stiff and cannot feign affection to save his life.
Realizing that their cover will be blown by the Duke's robotic demeanor, Rinha takes matters into her own hands. If he can't act like he's in love, she will just have to make him fall for her. What starts as a contract marriage of convenience turns into a chaotic game of seduction, where the line between acting and true feelings begins to blur. Charming the Duke of the North delivers a refreshing mix of mystery, comedy, and romance, featuring a confident female lead who knows exactly how to steal the show.