Chuck the cat, lonely when his owner Katie goes to college and his best friend and fellow dog-hater Tom is taken away in a cage, can't believe it when he finds a new companion in a beast named Rotten Willy.
Living with his family in the rugged, often dangerous, Wyoming mountains in the 1860s, twelve-year-old Adam finds his courage put to the test when he is left in charge of the household during his stepfather's absence.