The story, without the spoilers.
K is an ordinary university student whose only comfort in a hard life is reading a historical romance novel. One day she wakes up inside that very novel, in the body of Cha Seon-chaek, a minor noblewoman who appears in only one line of the story. Her plan is simple: stay out of the way and let the real heroine have her romance with Prince Yi Beon. But one drunken night changes everything, and suddenly the novel's hero is looking at her instead of the woman he was written to love. The First Night with the Duke is a playful, light fantasy romance based on a popular web novel. Seohyun is lively and funny as a modern reader trapped in a historical plot, and Taecyeon is charming as the prince whose story has gone off script. The humour is broad, the plot is predictable, and the production is modest next to bigger fantasy dramas. But if you enjoy isekai-style romances where the reader becomes part of the story, this is a fun and easy binge.
A little curiosity. A new favourite.
Start with the story, meet the cast, and make room for one more episode.