Misa is a woman who has always lived her life as a "supporting character" in service of others. When betrayal by her husband and best friend leads to her death, she is mysteriously granted a second chance, traveling back in time by ten years. Determined to rewrite her fate, she sheds her former "nice person" persona to pursue revenge. However, her plans take an unexpected turn when she meets Section Chief Wataru Suzuki, a man absent from her previous life, who begins to change her revenge-focused heart. Through this second chance, Misa discovers what it means to truly become the protagonist of her own story.