Archangel Gabriel, having fallen into the mortal world after a celestial battle, awakens in the body of Sera Sterling—a timid heiress sold into human trafficking by her greedy family. At a Manhattan underground auction, she encounters Dante Moretti, heir to a crime empire, whose genetic disease is actually a 1,000-year-old demonic curse: every Moretti dies at 27. Gabriel purges his curse, proving her divine nature, and Dante protects her from her toxic family. But Viktor, Dante's power-hungry uncle, allies with the demon Asmodeus and Sera's resentful stepsister Vivienne to destroy Gabriel. As Gabriel's Grace slowly recovers through Dante's unwavering faith and the adoration of followers, she discovers the only way to break the Moretti curse permanently is to destroy the original contract in Hell. When Viktor becomes Asmodeus's vessel and attacks, Dante performs a forbidden ritual—sealing the demon inside his own body to save Gabriel. Trapped in Dante's mindscape, Gabriel fights beside his soul, and their bond transcends divine and mortal boundaries. With Asmodeus imprisoned, the curse ends. Gabriel faces a choice: return to Heaven or stay mortal. She chooses to stay—for him. But the celestial realm has noticed her absence, and a fragment of Lucifer is now heading to New York, threatening everything.