Japanese film director Tetsu Shiratori's fourth documentary film 'Revival' revels the power of microorganisms who are the oldest living organisms known on earth. The film takes a scientific journey to prove how microorganisms, especially Yeast, Lactic Bacteria and Photosynthetic Bacteria could help restore the environment and the whole ecosystem that have long been polluted by the human activities. Radioactive contamination due to Fukushima nuclear accident where more than 120,000 residents are still taking shelter is not an exception. Will humans ever stop polluting the earth? 'Revival' casts a vital question that would determine the future path of humanity.