Fourteen-year-old Lupe Hernandez wishes she was blond, white, and popular. She dismisses the legend her Mexican grandmother tells about a treasured family heirloom—a pair of ruby earrings—as a silly fairytale, despite recurring nightmares of human sacrifice whenever she wears them. But when the earrings thrust her into the parallel world of Ixtumea, she must confront the very thing she shuns the most—her cultural heritage. Lupe’s journey takes her through a dense Mayan jungle to the damp underground kingdom of Malvado, where a rebel leader plots to keep her from fulfilling her destiny. She is guided by a hot warrior protector named Teancum, who tells her about a prophecy of a long-awaited young prophetess—which happens to be Lupe. She trains with the Spider Goddess, who teaches her the sacred knots that bind both worlds together. And she meets her long-lost mother, Concha—who is now a dangerous enemy. Life as Lupe knows it will never be the same!