The novel reimagines the Snow White fairy tale from the perspective of the Evil Queen, tracing her transformation from an insecure, loving woman into the villain who poisons her stepdaughter.
On the morning of her wedding, the Queen stands alone examining a mirror that fills her with inexplicable dread. The daughter of a renowned mirror craftsman, she has spent her life believing she is ugly, a conviction instilled by her father's relentless emotional abuse. Her mother died in childbirth, and her father blamed the Queen for the loss. Verona, the Queen's lady-in-waiting and closest friend, enters with Snow White, the King's young daughter of about three or four, whose extraordinary beauty the Queen adores but secretly envies.
The Queen recalls how the King visited her father's shop, called her the fairest maiden in the land, and courted her after her father's death, which she experienced as liberation. She hung her father's mirrors from a tree in celebration, though the townsfolk mistook the gesture for a tribute. At the wedding, the couple exchanges vows beside the old well the King moved from the shop to the castle courtyard. That night, the King presents an ornate oval mirror that fills the Queen with the same dread.
The early days of marriage bring happiness. The King entrusts the Queen with letters written by his first wife, Rose, so Snow might someday know her birth mother, then departs for battle. During his absence, the Queen and Snow bond deeply. But one night a man's face appears in the wedding mirror and speaks. Terrified, the Queen shatters the glass.
The King returns from campaign, but an enemy army attacks the castle that evening. He leads the Queen and Snow through a dungeon trapdoor to a rowboat; they escape through an underground waterway while he repels the invaders. Afterward, the Queen discovers the mirror has been restored. The King reveals that the mirror was crafted by her father and that he had it repaired as a keepsake. He departs again, and during this second absence, the Queen confides in Verona about the face. Verona parts the curtains to reveal only a normal reflection and dismisses the vision as exhaustion.
Three of the King's distant cousins arrive: Lucinda, Ruby, and Martha, indistinguishable triplets who finish each other's sentences and paint their faces white. They terrify Snow with talk of dismemberment and potions. The Queen prepares a winter solstice celebration, but the sisters terrorize Snow again. When the King returns, the sisters falsely accuse Snow of tricking them into a hole. The King believes them and berates his daughter. The Queen intervenes fiercely, ordering the sisters removed in shackles and commanding the King to apologize.
That night, the Queen reveals the full extent of her father's abuse, including his deathbed words: "I have never loved you, daughter." She tells the King she vowed to break the cycle by loving Snow as her own. Left alone, she hears the voice again. The Slave in the mirror introduces himself as her servant, able to see into every soul in the kingdom. The Queen confronts a grotesque, disembodied head surrounded by swirling purple smoke. He calls her "daughter," and she recognizes him as her father's spirit. She faints. The King smashes the mirror at her demand and departs once more for battle.
Weeks later, a package arrives with a note: "FOR YOUR HOSPITALITY." Inside is the mirror, restored. The Slave narrates a vision of the King being impaled on the battlefield. Moments later, Verona confirms the King's death. The Queen tells Snow, finding the girl at the well feeding bluebirds. Snow collapses, howling.
At the funeral, the odd sisters reappear and confirm the mirror was their gift. The Queen sends for them, and they reveal her father bartered his soul to them to make his barren wife able to bear a child; when he died, they captured his spirit in the mirror. They teach the Queen an incantation to summon the Slave. That evening, she asks who is fairest. Bound by honesty, the Slave answers: "You are, my Queen." Hearing her father's spirit affirm her beauty gives her a profound sense of power. The ritual becomes compulsive, and the mirror's daily affirmation becomes her only cure for the insecurities her father instilled.
One day the Slave declares Verona the fairest. Seized by jealousy, the Queen sends Verona on a diplomatic assignment. She discovers the sisters' second gift in the dungeon: spell books, potions, and a cauldron. Over years she masters the Black Arts, the dark magic detailed in the sisters' books. Her heart hardens. She strips Snow of her status, dresses her in rags, and assigns her menial chores. When a young Prince begins courting Snow, the Queen sabotages the relationship, driven by jealousy of Snow's youth and a warped desire to spare the girl heartbreak.
Years later, Verona returns and pleads with the Queen to reconnect with Snow. Briefly moved, the Queen orders the Huntsman, a loyal court official, to bury the mirror in the forest. But without it she deteriorates, and one morning she wakes to find the mirror beside her bed, her hands caked with earth. She has retrieved it while sleepwalking. When Snow arrives bruised from secretly meeting the Prince, the Queen slaps her. Verona calls the Queen "a cold, wicked woman," and the Queen banishes her forever.
A prolonged fever follows in which dreams and reality blur. The Slave tells the Queen she must kill Snow to survive and admits his true motive: "I've hated you from the day you came into this world." Everything has been revenge for her mother's death. In a dreamlike trance, the Queen walks into a blackened forest and finds a single apple on a dead tree.
She wakes transformed, her tenderness gone. The Slave declares Snow White the fairest. The three sisters materialize and urge her: "Kill the girl." They offer a steaming potion; yielding to the inner compulsion she has fought for years, the Queen drinks, and a weaponlike rage overtakes her.
She orders the Huntsman to lead Snow into the forest, kill her, and return with her heart. He returns with a box, but the Slave reveals Snow lives in a cottage of Seven Dwarfs beyond the Seven Jeweled Hills; the heart is a pig's. The Queen stabs the Huntsman.
She brews a Peddler's Disguise potion from the sisters' spell books, transforming into a haggard old woman, then creates a poisoned apple using the Sleeping Death recipe. Disguised as a crone, she treks to the dwarfs' cottage and offers the apple as a "magic wishing apple." Inside, she feels a momentary impulse of love but buries it. Snow wishes for love, bites the apple, and collapses.
Standing over Snow, the Queen learns the disguise has no antidote; she is trapped in the hag's form permanently. She has become exactly like her father, destroying everything for nothing. The dwarfs pursue her to a fork in the path. The sisters appear one final time and urge her toward the forest, promising safety. The Queen reflects on all her life once held, then looks up at the cliff and chooses that path, accepting her fate.
In an epilogue, Snow White is awakened by Love's First Kiss from the Prince. They marry, and on their wedding night the Queen's mirrored cylinder, a decorative keepsake, casts luminous patterns on the castle walls. Snow reflects on her stepmother with love, believing the real Queen died the day the King was killed. Alone in her chamber, Snow opens a wedding gift: the Magic Mirror. The face that appears is the Queen's. She tells Snow, "I love you, my beautiful little bird. I always have, and I always will." Snow smiles.