Basically, it's easier to imagine the dream as one giant doujin and I'm in the perspective of the main character. The main character is this girl who's in the city and for some reason there's this guy hellbent on raping her and killing her (in some horrible way I might add) before her train arrives.

She (or I) gets killed multiple times. At the final chapter, she finally manages to get away, but it turns out she was only hallucinating because the guy drugged her and she gets killed at the end. No matter what choice she makes, she always dies at the end in some horrible way.