Okay so you play as a character Guy or girl and you go through a little character creation.
Your character goes out with a couple friends on a trip after you graduate high school and well you get a little drunk one and end up sleeping with someone you can barely remember the person but you concluded that this is the person you love
Along with that they accidentally took your jacket with your passport and wallet
You can survive without the wallet but if you ever wanna return home you gotta get your passport back.
On top of that, it seems you're being followed by someone, but what could they possibly want from a foreigner? I mean it's not like you stole anything, right...?