This is the main plot and game-flow" :
"The Year is 2218. Earth it's now completely barren, and any sort of vegetation has died. A group of scientists has discovered a way to create new plants using a new source of energy, but every attempt to repopulate Earth with vegetation does not bring any result. It seems all lost. It seems that the planet has reached now the point of no return, the "deadline of life on earth".
So scientists start a project called "Back To The Green" where some special agents are chosen to go back in time and raise awareness of everyone on the planet to avoid catastrophes in the future, equipped with the new source of energy and a special device capable to predict how this change impacts the future.