The unlikely team of Whitt Roberts, Oberlin St. Clair and Mai Lee trek through the remote mountains of Tibet. Because of the vast landscape that lies ahead, The Blackdoor Group calls in some sinister support to complete their mysterious extraction mission. And back in Leviathan, Harlequinn and Bennu finally face off in a deadly showdown that has been brewing for centuries. And on a lighter note, Tulley discovers a dive bar in Leviathan.