A middle-aged couple fantasise about walking the length of Britain upon retirement, safe enough as retirement is a quarter of a century away. Then illness strikes, early retirement, a promise to be fulfilled. Arriving battered but triumphant at journeys end, vowing "never again" at the end of their epic journey they find themselves sharing a restaurant with a group of disabled children from a care centre. The couple resolve to repeat the journey the following year raising funds for this centre, their "return journey". Sometimes sad, sometimes heart rending, a funny true life story of determination and courage.