Trapped in the nervous desperation of Havana, Raul dreams of escaping to Miami. When accused of assault, his only option is to flee. He begs his best friend, Elio, to abandon everything and help him reach the forbidden land 90 miles across the ocean. Elio's commitment is tested when he is torn between helping Raul escape and protecting his twin sister, Lila. Brimming with the nervous energy of Havana's restless youth in the crumbling sun-bleached capital, Una Noche follows one sweltering day, full of hope and fraught with tension, that burns to a shocking climax.