Having lost her corporate job, her unfaithful fiancé, and her last savings in a single afternoon, Lisa hits rock bottom inside her dilapidated apartment. In a fit of drunken grief, she recites an ancient Latin chant found in an old antique book, inadvertently shattering a millennia-old infernal seal. The ritual summons Lucifer himself, an imposing dark monarch who immediately discovers Lisa harbors the lost divine splinter of his demonic soul.
Attempting to reclaim his stolen essence through lethal force, Lucifer triggers a mystical rebound that magically binds his physical heartbeat to Lisa's fragile mortal body. Forced to live under the same roof while celestial hunters and hellhound factions hunt them down, the cynical demon lord and the resilient human woman form a volatile partnership. When ancient prophecies demand a sacrifice, both must decide whether to embrace damnation or protect their forbidden bond.
