"Brooke's summer is going to be epic-- having fun with her friends and a job that lets her buy a car. Then her new stepfather announces his daughter is moving in. Brooke has always longed for a sibling, so she's excited about spending more time with her stepsister. But she worries, too. Natalie has Asperger's-- and Brooke's not sure how to be the big sister that Natalie needs..."--Front jacket flap.