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!

A group of friends stop to pick up a hitchhiking woman only to end up getting drugged by her with a gas. They awaken to find that vials have been implanted in the base of their skulls - which are of course instantly fatal if they are removed, a grinning professional looking woman informs them on TV screens that they have 22hrs to fill these vials with a specific amount of brain fluid, a fluid that is produced during times of extreme pain. Along with another group of unlucky test subjects and with time ticking away they decide to work together and share the burden of reaching their painful target.