The story is about David's parents Diego and Shari (whom have a strange Kourtney Kardashian/Scott Disick type relationship) taking holiday (that's what Europeans call vacationing) in Italy. They ask their married friends Matteo and Francesca to join. While there Shari's brother Leonard visits as well as David, whom is a US model/college student.
The crux of the movie is that Matteo's gradual romantic feelings for David. They set it up perfectly as Matteo isn't gay nor has he seen David in MANY years, but when he does there's an explosion that occurs of emotion, tragedy, and not even necessarily romance.
Of all the remakes Hollywood has done this would be an amazing one to do. Here's hoping they smarten up :)