The crisis being modeled here, though not much discussed (yet), will certainly come into being if the drift of the two "neutral" Scandinavian nations toward NATO membership continues. That would, in turn, most likely occur if--probably in reaction to the growing Muslim immigration crisis there--a conservative government came to power in Sweden. Part of that altered worldview in Stockholm would then likely also move that government to want to join the Western alliance. Since the Finns are already allied with Sweden (and Denmark), it's hard not to imagine such a shift wouldn't also pull Helsinki in the same direction.
All of which would be unacceptable to Putin. His goal here would therefore be to bring off a quick and victorious blitzkrieg-like campaign against Finland, while probably also seizing the low-hanging geo-strategic fruit of Sweden's Gotland Island. That would allow him to install a fully subservient government in Helsinki, turn the Baltic Sea into a Russian lake, and simultaneously recast Sweden into Finland's former role: a quiet and pliant neutral.
This game can be played as a stand-alone, or it can be used as part of a new "Grand Campaign Scenario" for combined play with its parent game, Putin Strikes.