When Denis O'Connor and his wife Catherine return to Owl Cottage, only to find it in a dilapidated state, they decide to restore his former home. But the memory of Denis' beloved cat, Toby Jug, still lingers on. On impulse, he buys four Maine Coon kittens and names them Pablo, Carlos, Luis and Max. Set against the wilds of the Northumbrian coast, Denis tenderly and humorously charts the ups and downs of life with his mischievous new cats. Forays into this beautiful countryside - in order to train his cats to bond more closely with him - are never without incident. However, when Pablo disappears, Denis is once again reminded of Toby Jug and the strength of bond between man and cat.