The Polar Expediton, a journey organised by the Artificier's Guild is completed when you encounter Vitti Jokinen in Nanortalik.
To join the Polar Expedition and trigger this scenario Phileas Fogg and Passepartout must go to northorn Scandanvia by riding the Pomor Hunting Balloon from Tromsø to Smeerenburg where they then board an Ice Walker bound for the North Pole. This is a dangerous journey and one of the few places in the game that Fileas Fogg can actually die. To help avoid this fate you need to make sure Passepartout makes as many friends as he can before the Ice Walker is destroyed.
When the Ice Walker explodes and Phileas Fogg needs healing from a shrapnel wound you will have tto call in favours from the friendships Passepartout made. You need at least three favors to keep Phileas Fogg alive long enough for him to be rescued.
Favor 1 - Monsieur Mezensky (Hunter)
He will provide a thick fur to keep Phileas Fogg warm if Passepartout helped him hunt the whale.
Favor 2 - Monsieur Andree (Support Balloon attached to Ice Walker)
If Passepartout helped him to stow away on the expedition and if he is present he will contribute some tins of broth if you ask him.
Favor 3 - Apprentice Navigator
If Passepartout bribed him to keep watch he will hand over a vial of thick tonic to help Phileas Fogg heal.
Note: If you have specific items in your inventory such as vodka or a buffalo hide you can use them instead of asking a favor.
When you are rescued you will be given the choice of taking one of two meteorogical airships. The left one will take you to Winnipeg in Canada, the right one will take you to Reykjavik, Iceland.