The Voyage Above

You are taken back to 52 years ago when Earth's resources were strained and running low. This rendered earth almost inhabitable causing a team of capable individuals to initiate Project Orion. They find refuge on another planet. The creme de la creme of human beings travelled to this modern world including knowledgeable scientists, farmers, manufacturers, professors. They live in Terrina-5 where the surface is covered with toxic gas. In an attempt to avoid the harmful gas, they build their colony underwater. It's quite grim and suffocating. This is where you come in. Your task is to help the main character who is only 23 years old. He needs to get out of this place and finally live on earth.