In the distant future, mankind's dependence on fossil fuels will lead to their complete depletion, an energy crisis unlike anything the world witnessed. Out of retaliation and fear, humanity began focusing at an alternative source of energy: solar power. Different nations have united together to form three major factions�the Union of Solar Energy and Free Nations, the Advanced European Union, and the Human Reform League. Each of these sectors has access to a solar power generator, which gives them limitless energy.