Waking Merlin

While on a pot-holing expedition with her dad, ten-year-old Katrina Picket accidentally wakes Merlin, who tells her that they must save England from a meteorite that is about to strike. Katrina and Merlin travel to London, waking King Arthur and his knights, and Desmond, a hungry dragon, along the way. Can they get there in time to stop the meteorite and save the country from destruction?