On board a vessel with other miners headed for the Klondike gold fields, Mike Halliday wins a hefty sum Jefferson Durain in a poker game. He out-maneuvers Durain's thugs, but has all his money stolen when Durain's girlfriend slips him a drugged drink. In Skagway, broke and hungover, he's befriended by Kathy O'Hara, Durain's business rival. When Durain's thugs deface Kathy hotel, Mike determines to get his money back form Durain and discourage him from attacking Kathy or her hotel.
Charley Morrison, an old friend of Kathy O'Hara, convinces Michael to help him search for a lost river of gold marked on a Russian map. While Michael and Charley are digging in the Alaskan hills, Jeff Durain launches his latest scheme to relieve Kathy of her profitable hotel.