In a land haunted by monsters made of vegetation, Cleo, a thirteen-year-old girl, will face her worst nightmare when Martín, her little brother, is caught by one of them. With the help of Iolo, a magical old lady, and a funny anteater as her travel companion, Cleo will go to the depths of the jungle in order to catch Mukira, the monster who took Martín, so that she can perform a ritual to bring her brother back. However, she will soon learn that monsters hide a surprising secret under their leafy skin. Presented at the Locarno Film Festival.