Derailment means going off route, going into an unexpected development. The title for this drama is so appropriate because this was not what I had signed up for. I love time travel and parallel worlds drama so reading the drama description I knew I had to watch this. Halfway through the drama it was still about a rich girl who somehow found herself in a parallel world where she was poor and a guy who loved the poor girl and was trying to send the rich girl to her world so he can get the poor girl back. And then the big reveal happened and everything just turned out to be a lie. Too bad that by this time I already loved the FL, who remained strong and sassy despite losing her riches, and I just want to know what happens to her. Also the dramamakers still made it interesting enough which stopped me from dropping the drama.

All I can say is that if you just want a time travel story, look somewhere else but if you want a good story then check this out.