Two corrupt cops have a successful, seemingly perfect money making scheme- they sell drugs that they seize from dealers, kill the dealers, and blame the crimes on street gangs. Their scheme is going along smoothly until they kill an undercover DEA agent posing as a dealer, and then try to cover-up their crime.
Buck is a big-hearted dog whose blissful domestic life is turned upside down when he is suddenly uprooted from his California home and transplanted to the exotic wilds of the Yukon during the Gold Rush of the 1890s. As the newest rookie on a mail delivery dog sled team—and later its leader—Buck experiences the adventure of a lifetime, ultimately finding his true place in the world and becoming his own master.