Having lived for 40 years on an old farm in northern Burgundy, Quebec astrophysicist Dr. Hubert Reeves has observed the deterioration of nature around his property. Faced with this threat to the Earth's ecosystem, the scientist shares his concern in regards to the imminent possibility of a sixth extinction of animal and plant species on the planet. Reeves and French sociologist Dr. Frédéric Lenoir team up with a variety of experts in various fields to propose possible solutions to stop the overexploitation of natural resources and the erosion of biodiversity. In this film dedicated to future generations, they remind us that life in all its forms is a fascinating and touching mystery... and that it is up to us to preserve it.