Raina has always wanted a little sister, but the reality of having one is not exactly what she pictured. When Amara is born, she turns out to be a cranky baby who prefers to play all by herself. As the years go by, their relationship only gets more complicated. Everything comes to a head during a massive family road trip from San Francisco all the way to a reunion in Colorado. Stuck in a van together, Raina and Amara are forced to face each other and their endless bickering. With a baby brother now in the mix and their parents acting strange, the two girls start to realize that they might actually need each other. You will join Raina on this funny, frustrating, and incredibly real journey as she discovers what it truly means to be a family.