"O2H" is a documentary that draws upon the discouraging picture of the world energy supply to illustrate a possible way out: hydrogen. The most common element in nature, hydrogen could prove a viable alternative to oil, thereby solving the geopolitical and environmental issues currently associated to the production of energy. Set mostly in Iceland - a country that has announced its intention to become fully independent from oil by 2050 using hydrogen as its main energy source, "O2H" includes experiments and interviews to the key players in this ambitious project. The documentary also features footage of a Norwegian micro-community that has already implemented the new energy supply system, entirely based on hydrogen and renewable resources, and the witness of Italian entrepreneur Adriano Marconetto. Are we really at a crossroads that will radically change the relationship between man and energy? Jeremy Rifkin, a well-known U.S. economist, believes we are. In an exclusive interview included in the documentary, Prof. Rifkin discusses the most delicate issues our civilization is currently facing (global warming, oil crisis, unrests in the Middle East, third world debt, etc.) and shows that they are closely related to one another. Finally he puts forth his fascinating theory: a new, hydrogen-based society - an energy supply system that has hydrogen and the Internet as its pillars. The future is now.