Jack Thornton has trouble winning at cards for the wager that he needs to make it to the Alaska gold areas. His luck changes when he pays $250 to get Buck, a sleddog that is part wolf to prevent him from being taken by an arrogant Englishman also led for the Yukon. On the way to the Yukon with Shorty Houlihan -- for opening somebody else's letter having a map of where gold is to be found that spent some time in prison -- a woman whose husband was this letter's addressee is rescued by Jack. Buck helps Jack win a $1000 bet to get the equipment he needs. One night, So when Claire and Jack Blake Buck, palms signature.