An aging, skateboarding veterinarian Sir Billi goes above and beyond the call of duty fighting villainous policemen and powerful lairds in a battle to save an illegal fugitive - Bessie Boo the beaver! An heart warming and action packed family movie where thrilling car chases, heroic skydiving and daring stunts from this octogenarian, fueled with encounters with a hostile submarine, will keep you at the edge of your seat! Everyone wants a grandpa like Sir Billi, the Guardian of the Highlands!