Three years have passed since he married his wife Karen, and the relationship between the couple has deteriorated since the beginning of their marriage. What's more, even though I'm having a hard time with my job, Karen apparently trains alone with a man at the gym. One day, as my work calmed down, I felt that Karen had felt lonely, and gave her a bouquet of flowers as a thank you, but it seemed somehow unstoppable. A few days later, my wife, who never answered the phone no matter how many times I called, realized that I had made a mistake...