Life is just fine for fourteen-year-old Winston. She loves her dog, Thelma, and although she never knew her dad, and her mom left ten years ago in search of Hollywood fame, Winston has family with Nanny, who isn't old at all! But a "just fine" life gets a lot more exciting when a letter arrives from Skye Harper, aka Judith Fletcher, aka Winston's mother. She needs help, and Nanny says the best way to give it is to take a cross-country road trip--in a "borrowed" motor home--to go find Mama once and for all. Winston's not so sure about this plan, but with a cute stowaway named Steve along for company and an adventure on the horizon, this is sure to be a summer to remember.