Rose Howard loves rules, routines, and especially homonyms. She even gave her beloved dog a name with two homonyms: Rain, which also sounds like reign and rein. That makes her dog incredibly special according to her own strict rules. But the people around Rose, including her teachers and her single father, often struggle to understand her unique mind and the way she views the world. When a devastating storm hits their rural town, the rivers overflow and the roads wash away. In the middle of the chaos, Rain goes missing. Rose is absolutely heartbroken, knowing her father should never have let the dog out into the fierce weather. Now, Rose must do the hardest thing she has ever faced: step outside her safe routines and familiar places to rescue her best friend. Join Rose on an unforgettable journey of bravery and love as she searches for Rain against all odds.