Sixth-grader Sophie Washington and friends learn lessons about entrepreneurship, team work, and friendship when they sign up for a city-wide, Lemonade Day event. Sophie wants to buy her mother something special for her birthday, but she's short on cash. Her bestie, Chloe, comes up with the perfect solution. Build their own lemonade stand to raise money at Lemonade Day. The girls add friends Carly and Nathan, and Sophie's little brother, Cole, to their team, and decide to donate some of their earnings to a local animal shelter to help save stray animals. Things are going great, until the family dog destroys their supplies. They get worse when Sophie tries to impress another boy in their class and upsets Nathan. Can they save their business in time for the event?