I did not know this was a remake but I enjoyed it thoroughly ! It is brilliant , well acted with some amazing photographic scenes and a story that keeps you on the edge of your seat . It never falters , keeps a good pace and your interest . A most enjoyable Back to the Future series . The cast is wonderful especially Jeon Yeo-been who transforms from a 36 year old woman into an awkward teenager through skills and good acting . Three characters time travelled but the story never loses its focus until it is all resolved . There won't be any going back into the past . The past is safe . The future remains in the future and the ending predicts a forthcoming romance . The theme song is beautiful .