This is the reason why I love watching movies. The film is one of my favourite series/franchise. You should watch Before Sunrise and Before Sunset to understand and appreciate the film. The first part happened 18 years ago (1995) where two people meet for few hours before sunrise, chat and go their own way. Exactly 9 year later (2004) is when the second part happens. The same characters meet again, spend an evening, realize they are in love (though Ethan Hawke was married) and reluctantly part. Before Midnight talks about what happens between them 9 years later (in 2013). These are brilliant films with only conversations that get you hooked on. All 3 films have the same cast and characterization that matures with age. I am sure in 2022 (9 years later), there is going to be a After Midnight and I am looking forward to it!