The good-for-nothing Bingshan Loli and the frail and sickly Sister Dou M live together for some reason and take care of each other. Yu Jie and Loli grew up together as neighbors. Yu Jie is a few years older than Loli, but Loli likes to play games. Yu Jie already works, so it is mainly Yu Jie who takes care of Loli, and Loli spends most of her time at the bedside of the sick Yu Jie. Sister Yu likes to be trained, but Loli is cold on the outside, but she loves Sister Yu deeply in her heart. In order to satisfy Sister Yu's preferences, she often pretends to be cold and ruthless...