Flynn Channing, a hardworking corporate employee, receives a disappointing paycheck that barely covers her living expenses despite her efforts. Struggling financially, she is approached by a man who asks for help after escaping a threatening situation that left him injured. Promising to repay anything, Flynn reluctantly agrees to assist him. Suddenly, she awakens a mysterious system that boosts her defense when attacked by monsters, revealing an unexpected power. As she faces this new reality, Flynn’s life takes a dramatic turn, leaving her to decide how to use this newfound ability amid looming dangers.