When Chaerin Eun becomes the protagonist of the romance novel she is reading, she expects a fairytale ending with the novel’s love interest, Jeha. But when a bizarre twist makes her realize the story is not playing out as it does in the book, she’ll need the help of an unlikely character from her class to defy the new storyline and find her happy ending — if only she can figure out who this ‘Unknown Extra’ is first!
Chaerin leads a blissful and comfortable life as the lead in a romance novel. She only has eyes for the male lead, Jeha, to the point where all the extras are literal black shadows.
But then, one day, her story suddenly switches genres.
All of a sudden, she discovers that if she wants to live, she has to band together with the extras she ignored before and work with them to survive!