The beautiful, mysterious world of rain is visualized using the latest filming technology. Ultra-high speed cameras capture breathtaking images in Odaigahara, the rainiest area in Japan that receives an annual rainfall of 5,000 millimeters. On the ground form lakes that only appear after summer heavy rains, allowing rare frogs to thrive. In winter, a unique natural phenomenon called Glazed Frost takes place if rain falls unfrozen and the air temperature is below zero. Through poetic cinematography, we discover just how rain enriches the natural beauty in Japan, a country unusually blessed with rain.