If you want know what happened on the last two season read the summary on the second post on the first page (there about's)

In this season it's mostly been people surviving, Nothing much as happen...majorly at least

Everyone is either at Outpost, A community, Haywood...which is rather ruined. Or in small groups.

I would suggest One of the small groups...Cause Outpost has this plot going on kinda. And Haywood, has few people (Pretty sure all NPC'S)... If you want your character to stumble somewhere... But whatever you want to do