Buenos Aires 1977, the military dictatorship is terrorizing the population. Francisco Sanctis (45) works as an administrative employee. His life is calm, outside of political events. One afternoon, he receives information that forces him out from its passivity. Elena (45), an old friend of the University, calls him urgently. She needs that Francisco signs an authorization to publish a combative poem which he wrote in those years. In her car, Elena tell him that the poem was an excuse and she gives two names and address to him. The army will find these people and will kidnap them. Francisco begins his long night. Shall he try to save the lives of two unknown at the risk of his own life? La larga noche de Francisco Sanctis is structured as an internal journey of a stunned character before a conflict of tragic character. In this, our hero finds himself alone with the final decision.