In a downtown building, old and beautiful, of the turbulent Buenos Aires, stories of men and women who keep secrets behind solid walls are intertwined. For Lucy, it is the secret price for freedom; for the Ukrainian immigrant and the Tucuman teenager, it is a refuge; for Lorenzo, it is debauchery; for Gaby and Mariano, disagreement; for Mónica and Sergio, the promise of new life. The stories are intertwined. No one is the same after opening the door to their most intimate desire.