Based on the book by Horacio Lutzky and Miriam Lewin about the confession of a confidential witness, the series revolves around Iosi Peres, a young intelligence agent of the Federal Police of Argentina who infiltrates the Jewish community for quite some time to collect information about the Andinia Plan, the same one that was used to carry out two attacks that marked a before and after in Argentina, and the same one that left more than 100 dead. In season 2, Iosi is a double agent for the Argentine intelligence services, on the one hand, and a Mossad spy, on the other. Tormented by the attack on the AMIA and its cover-up, he tells his story to a prestigious journalist, but the past bursts into the present with force and Iosi is betrayed.