The movie My Nightmare Office Affair follows the life of Nick, a successful executive with a loving wife and daughter. Nick's boss, Lisa, is obsessed with having a child of her own and has been trying to conceive for years without any success. When Lisa sees Nick's family, she becomes more desperate to have a family of her own.
One day, Lisa seduces Nick, taking advantage of his moment of weakness. They start having an affair, and Lisa becomes obsessed with him. She wants Nick to divorce his wife and marry her so they can start a family. Nick realizes that he's made a mistake and decides to end things with Lisa, but she won't let him go.
As Nick tries to break things off with Lisa, she becomes increasingly unstable and dangerous. She's willing to do anything to keep Nick and get rid of his wife and daughter, even if it means jeopardizing his job and his life. With Lisa's dangerous agenda, Nick must find a way to protect his family and escape her clutches.
Throughout the movie, Nick must navigate a dangerous game with Lisa, trying to stay ahead of her while keeping his family safe. As tensions rise and the stakes get higher, Nick must confront Lisa in a final showdown that will determine the fate of his family and his own life.