Get ready for the biggest change of Mindy Kim's life. She is officially becoming a big sister! Mindy has never had a sibling before, and she is bursting with excitement to welcome her new baby brother, Charlie, to the family. She has grand plans to be the most helpful, responsible, and amazing big sister the world has ever seen. However, bringing a baby home is completely different than Mindy expected. Charlie is incredibly cute, but he is also much louder and significantly smellier than she ever imagined. Every time Mindy tries to pitch in and help out her parents, something goes a little bit wrong. It feels like she just cannot get the hang of this big sister business. Step into Mindy's world as she figures out how to navigate life with a fussy newborn. You will root for her as she searches for her own special way to connect with baby Charlie and prove that he is incredibly lucky to have her as his big sister.