In London, a seemingly romantic yet elegant city, a woman looks sad as she stands by the riverbank, and the foggy sky makes her look even more pitiful. Two days ago, Sally ended her two month long work in another city and excitedly arrived at her boyfriend's residence with luggage to give him a surprise. However, she didn't expect to see her boyfriend in intimate contact with another unfamiliar woman like a couple. Sally rushed up and slapped her boyfriend before leaving. Sally still couldn't accept her boyfriend's extramarital behavior. Looking at the swimming fish in the riverbank, a thought of jumping off rushed into her mind.