That's harder than it sounds, and I'm too tired to make a proper stab at it. I will though!
here has a synopsis of sorts, but it makes it sound like a 'gay film' rather than a really, really powerful, multi-faceted film,
one minor facet of which is the gay thing. But mostly it's centred around the lead character (Zach)'s relationship with his parents and the oldest of his brothers, and around religion. On the latter point, it's neither evangelising nor critical; it's just...hm.
It's really good. There aren't any explosions, but it's ...look, go and watch it somehow somewhere.