In the wake of a mysterious disaster that destroys human civilization, a poisonous mist has spread over the land. The only way to gain immunity to the deadly miasma is by consuming spirulina, called the "Viridis," a blue-green algae loaded with protein and nutrients. Spirulina can be cultivated, so your mission is to scout this devastated world and scavenge the needed materials to build and manage a new algae farm. But you'll need the help, or at least the cooperation, of fellow survivors. 

Will the new farm fall apart as individuality confronts community decision-making? Or can people work together well enough to survive, when their ultimate welfare is at stake?