The Love Witch meets Monstrilio in Bruja's Nest, where a young woman's abuse history and ambition erupt into body horror, class war, and monstrous motherhood.

Raised amidst poverty, alcoholism, and sexual abuse, Yolanda is determined to seize control of her future. When she starts work as an indentured servant on the Fernández De la Rosa estate, she realizes she can secure a place as the lady of the house: with a spell from the local bruja, she can trick their naive son into getting her pregnant.

But the fertility ritual-piercing her flesh, tucking a rooster's heart inside herself-begets more than she expected. Yolanda's body swells and seethes with infection, her few allies dwindle, and she delivers a massive egg under the watchful eye of Santa Muerte, the Mexican folk saint of death. The hacienda where she's been promised a permanent home is full of blasphemies, secrets, and bodies, and the family she's tied herself to is loyal only to wealth and power.

But Yolanda will do anything to protect her child, who deserves the love and safety she never had. Even if everyone insists he's a monster.