Rio de Janeiro, 2016. The hottest summer in history. The city is preparing for the Olympic Games. Ana, a 32-year-old public defender, works in the defense of a community threatened with removal by the works of the Olympic Park. Meanwhile, she's been noticing purple fungus-like spots on her body. Strange things begin to happen in the city as well as in Ana's body. The temperature rises, creating a humid and suffocating atmosphere. The sultriness accumulates before giving way to heavy rain.