A homicide investigation leads Fraser and Kowalski to a major arms smuggling operation masterminded by Fraser Sr.'s old adversary Holloway Muldoon. As Fraser and Kowalski pursue the case, they come up against the Feds, accidentally blowing the cover of the real Ray Vecchio. As Part I ended, Fraser and Kowalski had pursued arms dealer Holloway Muldoon to an airfield, arriving just in time to cling to the fuselage of the departing plane.
Fraser and Kowalski pursue an arms dealer to the Yukon, where they trek across dangerous ice fields to intercept a mysterious arms shipment. Joining forces with Thatcher, Turnbull and Buck Frobisher's legendary northern detachment, Fraser and Kowalski take on the buyers-Cyrus Bolt and his revolutionary militia.