The 100 - Season 2

taking time in the next 97 years, after a chemical boobing, the human being can no longer stay on the earth. But since there is less oxygen to maitain live condition, the group of 100 is despatched back the place where their grand- grand parents were living. Under the chemical catastrophe, the desination is full of dangerous and gene mutation creatures from animals, trees to insects. The group of experiment people must learn to survive and undercontrol by commanders on universe and very soon, why do they have to risk their lives in this way?