This book tells the tale of the Troll Family Olsen who are accidentally shipped to England. The family sleep in the granite of the mountains of Scandinavia and wake up to find their sleeping quarters have been mined and taken across the sea to the flat lands of East Anglia. An adventurous journey follows with exciting twists and turns as they try to get home. They find themselves helping many and varied animals along the way who repay the favour and help them return whence they came.