Gwen and the pack are back for a thrilling new adventure! On a mission to find their families, Gwen, Rupert and the dogs strike out across treacherous ice and freezing oceans. If they are to have any hope of survival, they must stowaway on a ship full of enemy soldiers. But sometimes help comes in unexpected forms. Someone new will join the pack … but who will leave? Deep in the frozen tundra, the danger is heating up!