In their tiny pale green cottage under the trees, Mallory Cook and her five-year-old son, Harry, are a little family unit who weather the storms of life together. Money is tight after Harry's father, Duncan, abandoned them to expand his business in New York. So when Duncan fails to return Harry after a visit, Mallory boards a plane to bring her son home any way she can. During the journey, a chance encounter with three retirees on the run from their care home leads Mallory on an unlikely group road trip across the United States. Zadie, Ernie, and Jock each have their own reasons for making the journey and along the way the four of them will learn the lengths they will travel to save each other - and themselves.