Greta is eleven years old, and she has stopped eating. She has stopped talking. And she has become fixated on the horrors of the climate crisis, which creep into news bulletins each night. Her parents grapple desperately, hopelessly, to make her better; her sister takes a turn for the worse; day by day, their family life begins to unravel. Four years later, Greta sits outside Swedish Parliament. Her parents watch on as she eats vegan pad thai and chats with a journalist.