YouTube production company <21g>’s editor-in-chief Dohyun is secretly admired by writer Yeonhee. Just a single greeting from him when they happen to cross paths is enough to make Yeonhee’s whole day happy, and her hobby is to indulge in private fantasies of being intimate with Dohyun. When the writer in charge of the channel quits the company, Yeonhee ends up taking over the job. Dohyun, who had only a small fondness for her because he liked her documentaries, begins to grow more curious about her as she joins his planning team. However, for Yeonhee—who used to write documentaries—the sex special is nothing but difficult. Though she wants to do well, she hides how much she struggles. Her elite colleague with perfect looks, Jungwon, notices how flustered she is over and begins to interfere. While receiving his help, Yeonhee does her best not to reveal how clumsy she is about “sex” and “romance.” One day, she ends up giving in to Jungwon’s provocation and accidentally spends the night with him. Yeonhee pretends to be skillful and takes the lead with Jungwon?!