Working as a convenience store manager in the countryside, I'm overwhelmed every day—my wife even left me. With few customers and no part-time staff, running a 24-hour store is impossible. Just when I'd hit my limit, a new employee finally arrives. She looks capable, and I hope she'll lighten my load. But she turns out to be nothing but a deadbeat, completely lacking any work ethic—she'd be more useful doing nothing at all. To protect the only store and the last shred of pride I have left, I lock this irresponsible woman inside and make her submit to XXX until she truly repents...