The story is based on the post-apocalyptic science fiction novel series La Compagnie des glaces by the French writer Georges-Jean Arnaud.

Giant wolf packs roam the frozen wastes, and the mammoth has re-emerged from the elephant stock.

A few radicals, though, are willing to attempt a change, and managing to hijack a train of the Union, the Transarctica, they set out in search of the "sun".

[citation needed] The Viking Union is out for blood, and meeting with another train triggers a simple battle mode.

However, the amount of elements to handle in a battle multiplies over time - though this hardly helps the common mop-up period at the end.