Cheolnam, works as a night security guard, at the largest corporation TC Group. He joins a free open chat room for married couples out of boredom. However, to his surprise, he discovers that it's not just an ordinary chat room but a secretive chat room for the TC Group's top executive members. This marks the beginning of Cheolnam's unexpected journey to turn the tables on the people who had previously looked down on him for his role as a security guard.