First of all I dont really write reviews but since there are a lot of negative comments I decided to share my opinion. I absolutely love the story. Its not a drama that you can relax while watching. Its exiting and there are not any plotlines left opened. It kept me hooked from the start to finish. I cant really understand why anyone would hate this drama but perhaps it was not easy to understand the plot bc it was very complicated. You can get better understanding of it if you know at least a little bit about the butterfly effect or have an opinion on time travel. Perhaps marvel fans will understand :) It is science fiction after all.