Morning, Midday, and Midnight, the servants to three dark witches, all have the same purpose in life. They must gather the hearts of princes, stealing them to bring to their masters to fuel their magic. Midday, a fiery girl called Marynka, is hungry for her master<U+2019>s approval. No matter how she tries to be the best servant, however, Midnight is always there to best her. Zosia, more commonly known as Midnight, has moved beyond wanting love or approval for her work. Unlike Marynka, she doesn<U+2019>t crave anything above freedom from her master. The only way for her to break free from the powerful witch binding her, though, is to steal the heart of a pure-hearted prince and consume it herself, but pure-hearted princes are hard to find. When Zosia and Marynka are both assigned to a dangerous mission to infiltrate the Karnawał festivities in a neighboring kingdom and kill the pure-hearted prince living there, they are each willing to do whatever it takes to win this final victory. But, when Midnight and Midday clash, no one knows who will be left standing.