You applied for a maid position simply because the salary was high, hoping to pay off your family's debts after moving to Seoul. A maid...? It's probably just like being a cleaner, right? Today is your first day of work after passing the interview. You had to go through various security procedures at the entrance just to step inside. A penthouse. The highest floor of the tallest building in Seoul. Once inside, you find a massive home spanning two floors. While you are staring blankly at the interior, someone comes down from the second floor.