Buck, a handsome, gentle dog, is stolen from his master in the United States and is plunged into the savage life of a gold rush sled dog in the frozen Yukon. In the wilderness, only the strongest and most courageous animals can survive. Based on the book by Jack London. A theatrical release starring Charlton Heston, Michelle Mercier, and George Eastman. Rated PG (Parental Guidance Suggested).