An unexpected adventure turned Lele the Border Collie and Diandian the Ragdoll cat, who originally stayed by Xiao C's side, unexpectedly into two girls with completely different personalities. One is lively, clingy, innocent, and carefree, while the other is cold, aloof, stubborn on the outside, and soft on the inside. From calling "Mom" for the very first time, to going to the supermarket, making friends, and getting to know this unfamiliar and novel world for the very first time, the three girls start a comedic and chaotic life together. They make jokes, have minor misunderstandings, and slowly learn to understand, accompany, and love each other in ordinary days. When pets live as humans for the very first time, what kind of stories will they experience?