This is an awesome drama. Suspense with a twist. If you like City Hunter, you'll love this. Great cast, great acting. The story line is great. Every episode is intense. The acting skills of So Ji Sub as Kim Woo Hyun is very intense and UHM Ki Joon as Jo Hyun Min played the villain so good. The cyber world manipulating technology is also awesome. Really hope this does not happen in real life, it's frightening to even imagine. Overall a perfect 10, a drama definitely not to be missed.