So on the off chance this is the first you're hearing of Severus Snape and the Marauders, too, get ready to feel all the feelz you can feel.
But first, a quick setup from the film's producers:
Set in 1978 just after Harry Potter's father James graduates from Hogwarts, he and his friends Sirius Black, Remus Lupin and Peter Pettigrew celebrate at a bar, contemplating their place in a war they are to soon become a part of. When Severus Snape enters the same bar, knowing the part he might play in the war, James Potter decides to do something about Snape once and for all.
The production quality and casting is simply jaw-dropping, and though I've always been a *little* resistant to Team Snape (that whole "friend zone" anger from the fandom towards Lily gets me riled, y'all) this had me rooting for Severus in a whole new, yelling-at-the-screen-and-fist-pumping way.
As for James Potter... well, as I posted to my personal FB, this is hard to watch, because it's so, so good. And again, feelz. As in, you're gonna feel this one in your gut.
Afterward I decided to give the film the hardest litmus test there is for all things Potter: I had John watch it. And get this: HE LOVED IT. Yep, the biggest Potter geek/book purist I know gives this his stamp of approval, guys! That's the highest of high praise!
K, no more spoilery talk. Just watch.
Oh! And when you're done, go check out the website for behind-the-scenes photos, official posters & wallpapers, and more:
(Did I mention Lily makes a badass appearance? Srsly, guys, you have to see this.)