At first sight this drama looks like innovator and with a fresh story.
When you start , you are quite curios about the situation with kids specify twins , their conection and "aliens" . However with each episode you realize that some many things doesnt hace sense despite is Sci- fiction serie.

Another problem is jump a randomly between "present" and future in few cases you can understand the connection also division among earth is irelevant or r maybe not with good argument about it. You realize many crazy characterswithout deep reasons or characters with empty memories without obvious reason.

The final result is so strange, topic about clone ( quite unbelievable), rare tecnologic without an exact origin known. To be sincere I asked some friends that already seen this drama about my hole in the trama and questions unanswered but they had the same feelings and no answer. For myside I will never recommended this drama and never rewatched.