86centimetres... is a film about Bhutan facing the indisputable effects of global warming; melting ice is weakening the walls of the Himalayan glacial lakes. 350 men and women walked 9 days up to Lunana, high in the mountains, the home of gods and spirits. They put up camp for three months and manually dig an outlet to reduce the volume of the water level in the Thorthormi glacial lake and thus prevent the lake from bursting. Tashi, a 21 year old farmer, enrolls on the grueling expedition, determined to secure his unborn child's future and to help prevent a terrible disaster.
86 centimetres follows Tashi from the day he leaves for lake Thorthormi till his re-union, three months later, with his family.