Nine-year-old Grace is always thinking up big ideas, like starting a business with her friends over the summer! When Mom announces a trip to Paris instead, Grace gets on board, but it quickly seems as if none of her plans are working out the way she'd hoped. She and her French cousin aren't getting along, and Grace's friends back home have started a business without her. Can she find the courage to stay open to new ideas and turn the summer around?

Read about Grace's trip to Paris from her cousin's point of view! Sylvie's excited that her American cousin is coming to Paris. But Grace's summer visit is just one of many changes for Sylvie. Her kaman is having a baby soon, and Sylvie isn't sure how she'll fit into her family once le bébé is born. Papa is so busy at their bakery, La Pâtisserie, that he doesn't have much time for her—even when she helps him decorate pastries. When Grace arrives, Sylvie discovers that her cousin doesn't speak French, and Sylvie's too shy to try speaking English. What can Sylvie do to fix her family troubles?

Back home in Massachusetts, Grace is excited to start a new French baking business with her friends, and to have an adorable new dog to train, too! But she quickly learns that both the business and the dog are big responsibilities, especially when her energetic pup has difficulty adjusting to her new home. Grace does her best to give her pet what she needs to be happy. Can she also help her friends blend their unique talents, and whip up a recipe for a successful business?

When Grace learns that her grandparents' bakery might be closing after 30 years, she's crushed. She can't imagine her life (or her hometown) without the bakery. And how can her own business survive if the one that inspired her cannot? Grace wonders if she and her friends can find a way to help the bakery using their talents and newfound business skills. Can three girls really make a difference? Grace is determined to try.