Fifteen-year-old Miss Penelope Lumley, a recent graduate of the Swanburne Academy for Poor Bright Females, is hired as governess to three young children who have been raised by wolves and must teach them to behave in a civilized manner quickly, in preparation for a Christmas ball.

Recounts the further escapades of Hiccup Horrendous Haddock the Third as he continues his Viking training during which he escapes from a boatload of Roman soldiers and searches for his kidnapped dragon.

Follows the lives of the Wright brothers and describes how they developed the first airplane