The city of Lisbon sleeps, but there are still some lit windows. One of these windows is Mercurio—a boy, a God. Every night, he stays up collecting messages and recordings from different human dreams. Real people describe some of their recurring or most memorable dreams: scary nightmares, love stories, premonitions. Through accessing these personal dreams as if by magic, and creating a cosmic connection with these characters, Mercurio learns what it's like to be human and to feel.