Comic fantasy adventure. Bullied at school and squabbled over by his divorced parents, 12-year-old Arthur (Hunter Allan) has been having a hard time lately. However, his life gets a lot more exciting when he discovers that he alone holds the secret to defeating an evil dragon bent on destroying all of civilisation. With the help of his mother Laura (Lea Thompson) and a magical troll, Arthur now sets out to conquer the dragon and save the world.