After the deep sea, the forest, and the sky and space, Nico and Ouistiti’s new expedition takes them to... the North Pole!

One morning, Nico walks into the machine shed to find his friend Ouistiti standing on a ship that can sail and glide on ice! Good thing, too, because their next expedition will take them... to the North Pole! They will spend a night in an igloo, see the beautiful northern lights, meet polar bears, foxes, arctic rabbits, an Inuit boy, a wise old walrus, and even penguin ice sculptors who find themselves in hot water as the ice pack starts to melt...