Mengxing Han, Ling Zhengying, and Xiao Minxi, three girls with different personalities, all work in the Princess Coffee House for their own reasons and live in the attic of the coffee house. The three people in the same class had a very good relationship, and many interesting things happened while living together. It tells the story of three people experiencing the test of love, friendship, and family together, and slowly growing up through various experiences.