For now, the plot of the game seems simple and "generic" you're playing as MC (In some cases you might play with another character) and you just moved with some friend of yours that you've known from years, but things are not as you though, getting you in some new experiences and finding new things about your new roommate and, why not, about you.
As I said it earlier, I'm trying to bring something new to your experience while playing the game, and as you're going through the game you'll notice that as you progress you'll get get even more choices and complex scenes.