Reverse the darkest hour of mankind! "you must see a good movie! Worrying and shocking "- Manoha Daggis, New York Times. "rejoice. People never get tired of watching it. " The Los Angeles Times. "look for ways to change the world." "ELLE". Mankind is on the verge of extinction! The last moment of reversing the crisis and stopping the global ecological disaster has come. Film star Leonardo DiCaprio, as the narrator and producer, presents this film with the theme of environmental protection to audiences around the world, showing the consequences of human past behavior and its development trend with an urgent and thought-provoking picture, and more importantly, the film tells us how to change all this. The film invites a large number of thinkers to participate in interviews, including politician Mikhail Gorbachev, scientist Stephen Hawking, sustainable development design expert William Mcdonough and so on. the remarks of these wise men remind us of the harsh situation facing all life on earth today. Floods, fires, hurricanes, icebergs capsizing, growing huge mountains of garbage. All the pictures shocked us and urged us to take action. Will we adopt an exciting one.