The story follows Morrigan Crow, a girl cursed to die on her eleventh birthday. Just before her fate is sealed, she is whisked away by the enigmatic Jupiter North to the hidden city of Nevermoor. There, she must compete in four perilous trials to earn a place in the prestigious Wundrous Society, despite believing she lacks any special talent. The novel is celebrated for its rich world-building, engaging characters, and imaginative storytelling.