About

​In their first life, Isla, a powerful billionaire businesswoman, and Martha, a feared mafia boss, spent five idyllic months courting Guest. But as time passed, their warmth turned into a suffocating coldness. They began isolating her, pushing her away into the guest room of their penthouse, completely ignoring her fragile, childlike nature and her deep terror of being left alone with no family or friends to turn to. ​To escape her, they lied about a business trip to abandon her for a month. When Guest tried to follow them, they snapped at her, dismissing her distress as spoiled behavior. During their absence, an enemy syndicate raided the penthouse. Desperate and terrified, Guest called them repeatedly as the intruders closed in, only to be met with harsh words before they hung up. She was murdered in cold blood. Unaware, they returned weeks later, solely because another woman falsely accused Guest of hurting her. Finding her lifeless body, Martha carelessly moved it to the balcony without realizing she was dead, leaving her in the freezing cold for two days. ​It was only when they uncovered a recorded video left by Guest that the agonizing truth broke them. Crying and shivering on camera, her last words weren't of hatred, but of pure love—thanking them for giving her a family before a gunshot ended her life. Shaken by soul-crushing regret, time unexpectedly fractured, sending Isla and Martha back to the past. Retaining every horrific memory of their betrayal, they suddenly awaken at their office desks during the early days of their cold detachment—desperate to undo their sins and protect Guest at all costs.