Castaway on an uninhabited island, Abel, a very civilized mouse, finds his resourcefulness and endurance tested to the limit as he struggles to survive and return to his home.
The death of their drunken father strands ten-year-old Toughboy and his younger sister at a remote fishing cabin on the Yukon River near Ruby, Alaska, where they spend a summer trying to cope with dwindling food supplies and hostile wildlife.
