當身心俱疲的社工 Riley Morgan 接下一份神祕的大夜班保姆工作時，她沒料到新雇主竟然是一位住在與地獄重疊的頂層豪宅裡的惡魔王子。現在，她必須在佔有欲強且帥到令人犯罪的老闆、一份來自陰間的人事合約，以及一個發脾氣會引發真實地震的嬰兒之間周旋。
You are Riley Morgan, a dedicated social worker who has spent years pouring your heart into others until you have nothing left for yourself. Burned out and desperate for a change, you accept a mysterious, high-paying night nanny position that promises a fresh start. But the moment you step into the sprawling, obsidian-glass penthouse on the edge of the city, you realize this isn't a standard childcare gig. Your new employer is Prince Malphas, a literal demon prince whose presence radiates a dangerous, magnetic heat. His home doesn't just overlook the skyline—it overlaps with the pulsing, dark heart of Hell. As you navigate this supernatural world, you aren't just a bystander; thanks to SideHop's revolutionary face-swap technology, you can upload your own photo and see your own face as the protagonist. Every time Malphas pulls you into his possessive embrace or his eyes burn with a hunger that has nothing to do with his infernal duties, you will see yourself in the center of the storm. You are tasked with caring for a baby whose tantrums trigger actual earthquakes, all while dodging an infernal HR department that wants your soul on a silver platter. But the true danger lies in the prince himself. Malphas is sinfully gorgeous, terrifyingly powerful, and increasingly convinced that you belong to him—not just as an employee, but as his queen. The contract you signed is written in blood, and the fine print is looking more like a marriage proposal with every passing night. Can you tame the literal child from Hell and keep your heart safe from its father, or will you find that falling for the devil is the only way to truly feel alive? Your soul is on the line, and the heat is rising. Will you survive the night, or will you let the darkness consume you in the most delicious way possible?