Julius was born in the prewar years, and escapes death by a lucky chance. Rescued by John, a gardener, Julius lives with him and his family through the dangers and privations of World War Two, and when John fails to return from the hostilities, the fatherless family is forced to live through tumultuous times. By the time that peace returns, Julius is getting old, and, when it seems that he will have to share his home and beloved family with a most unwelcome arrival - a dog - Julius decides to follow the Gladlight, wherever it may lead him. During his journey, Julius has many adventures and learns much, so that, by the time he reaches his final destination, he is a wise and philosophical cat, with a message to pass on ...