Climate activist Greta Thunberg takes a year off school to explore the science of global warming and challenge world leaders, calling for action on climate change.

Greta travels through North America on her way to a UN climate conference in Chile. To understand the impact of climate change, she stops at three key locations that reveal how the planet is changing.

Greta sets off to the annual World Economic Forum in Davos, Switzerland, which will be attended by US president Donald Trump and other world leaders, to call for action on climate change.

The pandemic reveals the enormity of the challenge that tackling climate change poses as Greta learns the drop in emissions caused by the 2020 lockdowns is not enough to put the world on track to meet its climate goals. With mass protests off the agenda, Greta investigates what else could help limit the impact of climate change.

Intimate documentary about a young girl who has become the voice of a generation. The story of teenage climate activist Greta Thunberg is told through compelling, never-before-seen footage.