The life of singer Carmelo Zappulla is disrupted by the testimony of a repentant who accuses him of being involved in a murder. This is just the beginning of a long legal ordeal that will force Carmelo to fight to prove his innocence.

Lia is that part of himself that Vincenzo, a stand up comedian, married and with a child, never wanted to accept. She was his 'imaginary friend', the one his father sent away on a train when he caught him touching himself on the photo of a schoolmate. Now that his daughter has discovered his secret, Vincenzo has only one way to free himself from himself. In his latest show, he makes an appointment with his audience on platform 3, to say goodbye one last time. Only one of them will show up: Angela, who will find Vincenzo lying on the rails and will try to prevent him from making that extreme gesture. Because Lia exists. And it doesn't have to die.