I really struggle to care about romance films. Love is such a private, subjective, and in many ways arbitrary experience and, as a show-don't-tell medium, movies in my opinion just aren't an easy art through which to explore how people feel it. Generally movies standardize it to "well she fills his X deficit/need and he fills her Y deficit/need and that's why they work". I don't care about such contrived, transactional relationship.
Plainclothes, however, completely breaks through this trap. For spoilers I won't detail how, but this easily the most "real" romance I've seen in recent memory, perhaps late memory. I teared up several times in this one. If you're gay or bi, this is especially moving. But even if you're not, you're in for a novel concept and a tense story to keep you glued through an eye-opening experience about gay love, or the lackthereof...
Another reason this works so well is that, while substantively a tragic romance, it FEELS like you're watching a thriller due to the pacing, anxious cinematography, and tense writing structure.
So, so good. Keep an eye out on the creative team. Exceptional film.
