It's Wales, April 2064 and Health and Safety has gone quite mad. But Calum's Grandad - Taid - insists his old driving licence allows him to drive all sorts of 'dangerous' vehicles; vehicles that no one else can drive. That's because he passed his test before the 1st of January 1997.

Calum doesn't even like to leave the house without a defibrillator, so the two of them have very different attitudes when it comes to risk. But Calum also wants to buy a new Virtual Reality snowboarding rig - and Taid may just have the money to pay for it.