Yeo-rin witnesses her boyfriend's affair with a girl, along with In-ha, a man she doesn't know in the military visiting room by mistake. Yeo-rin, who kissed In-ha on a whim, writes her novel based on that experience and makes her splendid debut. However, her joy was short-lived, and as her next works were destroyed one after another and she fell into a slump. I'm a romance writer, but I can't write romance! In front of such a tender girl, Inha, the muse of her debut work, appeared again! Yeorin suddenly lets Inha, who is unemployed, move into her share house her. As soon as Inha enters the house, Yeorin receives a proposal for a project from Seok-Hyun, her editor in charge, and the down payment is 300 million won! However, she must write a romance novel !