"Vinsent" is a ginger cat who finds himself stranded on an island populated only by a rather savage, but dumb, dog and by a mouse. They inhabit a grand old mansion house where their daily routine is quite literally that - routine! Anyway, a storm comes along and this causes their home to crumble into the sea leaving the cat and his mouse friend "Moris" floating the seas inside a piano! Luckily, that's picked up by a tanker and next thing, they are in the world renowned Hermitage museum in St Petersburg and 'Vinsent" is dragooned into a herd of other cats whose mission is to protect the priceles...