Irene is living her life in Rome when her mother asks her to return for a few days to Rimini, the city where she was born and from which she had escaped, to take care of her older autistic brother, Omar. Once they are together again, Irene discovers that Omar has very clear plans for his future. He has no intention of living with her once their parents are gone, and he is determined to do whatever it takes to achieve his dreams. He wants to get married, he wants to have three children because three is the perfect number, and he wants to become a famous rap singer. But before any of this can happen, Omar must first learn to become independent. Together, Irene and Omar embark on a tender and moving intensive course in becoming an “adult.” In their family home, filled with memories, they face fears and hopes together and discover that, sometimes, growing up takes two.