Your team remains consistent throughout, and players can age (and retire) or gain skills and improve as games progress. In this mode, players can take any team (or create one to begin afresh) and will play through four seasons each year, each of which will comprise of a number of events of your choosing. The other mode is the Eternal League, which is a brand new mode that, erm, has the potential to last forever. In this story mode, players control the Reikland Reavers, a legendary human team that has seen better days, and must guide them to glory.
and believe it or not, there is indeed a story mode, although it is one carried over from the original Blood Bowl 2 base game.
There are effectively a couple of ways to play a campaign mode in BB2: LE.