El Lobo plot
It is 1973 when Txema, a Basque contractor, is implicated by ETA in an assassination attempt against his will. When he is arrested, the SECED, the Spanish secret service, is interested in him because of his connections with ETA. They deploy him as an infiltrator and he manages to get to the top of ETA. In this way we become acquainted with the working methods of both SECED and ETA, where internal conflicts are resolved in a bloody way. Gradually it becomes clear to the protagonist that personal interests often outweigh political ideals and that not everyone benefits from the dismantling of ETA.