Attack on Titan
I'm not gonna give out any kind of spoilers, not even the summary, because it's more fun to watch if you don't have any idea about what you're going to see. If you're that eager for a summary, go read the wikipedia page.
Dude 1: Yo, checked out Attack on Titan yet?
Dude 2: I told you I can't stand the horror genre.
Dude 1: Too bad man, you have no clue what you're missing.
Download audio sample : Attack on Titan