last season i didnt finish the story but i was able to go in adventure

so now i need to finish story or adventure will open without story ?

from what i remember you need to full it at least once

since most ppl start lad on adventure i would advice to complete it in normal difficulty asap, it's something fast to do anyway

you finish the story when you play for 1 second its the story of one company ruining a franchise.. sad story

Seasons do not require you to do campaign, non season does however. You can play adventure mode all you want in season but once it switches to non season you'll be stuck in campaign where you were previously