They said that each episode is going to go from decade to decade. We started in the 50s with episode 1, moved to the 60s in episode 2 (complete with how the ending upgraded to color like they did in the late 60s).
So going by that, episode 3 will be the 70s, episode 4 will be the 80s, episode 5 will be the 90s, episode 6 will be the early 2000s and episode 7 will be the current time period.
With episode 8 as the wrap-up.
Of course, the actual plot of how they're clearly trapped in some kind of illusion/alternate reality with SWORD trying to contact them and get them out will be interwoven with every episode.
My guess, Vision is similarly just something created from Wanda's mind and isn't really the actual Vision. Wanda will have to accept this with even "Dream Vision" convincing her that she must let him go so that she can truly be free.
Essentially his end is "I died once for you and for this world, I'll do it again if I have to."
She's able to leave, he fades away again and this Reality is undone and whatever bad thing it's causing is stopped.