This has got to be a series II or whatever. What a storyline. Now, this had me sitting straight up the whole time. Wow! This might be our future the way these scientists are cloning animals. Who knows what they are doing now? I know... I know, y'all will say "Nah". Never say "Nah". Kim Rae Won has not made a drama since 2017! He came back blasting his way to being the actor he was. I see he made a couple of movies in 2019. My first time seeing this actor and let me tell you it won't be my last. he is very impressive and handsome. Lee Da Hee another actress, my first time watching, I love the strong personality types of women who can act. She did that for me today. I will be watching her as well. The storyline was a lot different than the American-made L.U.C.A. I am impressed with this storyline. Fantasy or will it be a reality? Artificial hearts... what's next? Somebody has a messed-up head or can see the future. The visuals were lightning perfection. Now every time it thunders I will be thinking of this drama.