Lucidia Whitman doesn’t understand why her twin brother resents her for protecting him from being bullied since they were little. After she plays a role in his accidental death, she is plagued by nightmares of him suffering, and her desire to still protect him leads to obsession and her own death. At the Gothic weigh station of souls, she inadvertently exposes a plot to tip the balance of the universe, and, in the confusion, makes a Faustian deal with Voland, who claims to be able to fix everything if she gets him a book with the power to write and rewrite fates. After stealing the book, she finds that her actions have had dire consequences as the dead can no longer move on, and overcrowding pushes them towards the Sea of Oblivion. Now she must choose between fulfilling the deal that would resurrect her and her brother, and saving her friends from Voland as he moves to unleash chaos on the Afterlife.