User blog comment:OverlordRocks/What is the plot of season 7? (Let's look at the facts, work together, and have everybody collaborate!)/@comment-27507964-20160326040954

Past events, that basically includes everything canon. What I find interesting is Yang is the only ghost we see (other than Cole and we aren't quite sure what he is). Morro and his friends aren't returning. It would be really fun to see a young Wu and Garmadon.

Other people just seem to have come back, some from the dead, so I don't think that Lil' Nelson will be the green ninja. He could however in some twist of fate be Jay, based mainly on his hair color. We would basically get a younger Jay in the show, which would probably be too much Jay.