​By day, Eliana is the quiet, highly efficient executive secretary to Alexander, the ruthless head of the city’s most powerful corporate empire. By night, she is a lethal assassin bound by a dark blood debt, fighting to eliminate those who destroyed her past.​During a high-stakes masquerade assassination, a brutal fight leaves her mask shattered—and a razor knife wound across the sharp cheekbone of Dante Russell, the terrifying silver-haired heir of a rival mafia family.​With glowing crimson eyes and a dangerous obsession, Dante vows to hunt down the fierce phantom who drew his blood. As the tension between rival empires explodes and secrets unravel, Eliana must navigate a deadly game of fake marriage, secret identities, and a dark obsession she might not survive.

​By day, Eliana is an underpaid makeup assistant and secretary at Vance Enterprises, enduring her ice-cold, demanding CEO, Alexander. By night, she transforms into "Vixen"—a viral, mask-wearing gamer, streamer, and elite Muay-Thai fighter.​Her carefully divided life shatters when an exhausting night leads to a chaotic morning: she arrives at work in heavy cosplay makeup, runs into Alexander in the elevator, and unknowingly sparks his curiosity. Before she can recover, she finds herself forced to step in on a arranged blind date—only to sit across from Alexander himself.​To satisfy his family’s pressure, Alexander forces her into a temporary contract marriage, unaware that his plain secretary, the elevator mystery woman, and his new fake wife are all the same person. As corporate mafia, dangerous stalkers, and complex rivalries close in, Eliana must fight to protect her secrets, her friends, and a heart that might be falling for the boss she swore to hate.