This series is a waste of time. Super boring. The series goes with two plot lines side by side. One in the present and another fourteen years back in the past. In the present the protagonist,Jade is trying to study the zombies called as zero here so they can have a world living together with them. But she is one of the stupid, adamant, irrational person I have ever seen in a tv series. In almost in each episode she kills the person or people who save her or tries to. She panics whenever she is in danger resulting in the death of the person who saved her earlier but behaves like she is some kind of Lara Croft. In one episode because of her stupidity and stubbornness she kills her friend who was pregnant. Even in the second plot she and her sister started the outbreak of the virus because of their rebellious nature and stubbornness. She never listens to anyone neither in past nor in present and does not learn from her mistakes. The action scenes are also very slow and unbelievable.One of the scenes ,she jumped from a height but didn't get injured. In another scene, she is locked herself in a room to safe from the zombies without any weapons except a saw but finds a box of grenades in it. She gets unconscious but not a single zombie attacks her. She is allowed to roam freely even in captivity. Sometimes it feels like a teenager movie.So everything is so wrong in this series. Personally I recommend not to watch it. Better to watch some old tv series than this one.