There's a feeling of relief that comes just after you've robbed a bank...
Rex's parents have split up and, to make matters worse, he has to spend his summer holiday on a remote and rainy Irish island - with only unruly sheep for company.

The only upside: he'll be staying with his strange and brilliant Uncle Derm.

Then Rex discovers Uncle Derm is about to execute his most hair-brained plan yet . . . To rob the island's travelling bank!