To save her dying sister, Elara, a brilliant but penniless writer, summons an ancient Ink Demon who feeds on stories. The pact is simple: a moving tale in exchange for a day of life. But as the demon's demands grow crueler, delving from fictional legends into her most painful memories, Elara finds herself trapped in a lethal game of words. She is not only his prisoner, but also his only solace. However, the ultimate cost of this forbidden emotion, born in the shadows, is far more terrifying than she ever imagined... because every pact has a final, hidden clause.