Around two-three weeks the plot starts in mid-October 2014, ends on the first days November of the same year. There will be flashbacks dating to 10-20 years earlier, but the main plot is focused on those two weeks.
Okay, I've got a couple more "seasons" planned that should take place right after those events, actually, but even those shouldn't take too long. I think something between six month/a year in total?
...Either way, season 2 and 3 are still a huge WIP and so far the story is still on day one, lol