Antonio es un famoso astrofísico brasileño que trabaja como profesor en una universidad de Estados Unidos. Poco antes de regresar a Brasil, donde recibirá un homenaje del gobierno, se entera de que tiene un tumor cerebral. En Río de Janeiro, descubre su verdadera identidad biológica y una sorprendente relación de amor con su ciudad natal.
A Brazilian astrophysicist who has spent most of his adult life in America returns to his home country to accept a prestigious government award and come to terms with his troubled past after being diagnosed with an inoperable brain tumor. Upon returning to Brazil, Antonio accepts his award and sets out to visit his adoptive father while attempting to find out the identity of his biological mother.