What happens when the Earth is no longer habitable? Do you escape it, where to? Do you stay to save it? Can you stay? Io makes you ask these questions. How much are you willing to work on, no, bet on to ensure the survival of the human race?
Io shines the spotlight on how far humanity has come. If we leave a dying Earth, we not only leave the bad. We also leave all the good we made with it.
For Sam, last woman on Earth, that’s the reason why we can’t abandon home. Even if it means loneliness.