In December 1849…

...A crew of voyaging botanists en route to India through the hostile Tibetan plains is detained at a remote Catholic mission. On an uneasy Christmas Eve, their worst nightmares are realized when a band of marauders descend on the mission with murderous intent. In the massacre’s aftermath, only three survive: Will Repton of London, the week-old infant of the French missionaries, and a lost explorer who will do anything to avenge the dead.

Will believes the attack the result of native aggression, the quest for the orphaned child draws explorer, Seth Mayhew, to Bombay, India, and a lost explorer who knows the reason behind the attack, steals a dead man's name to deliver his own justice to the killers. But before the truth can be revealed, each must undergo an adventure through their own uncharted hearts.