Montse, divorced and with two children who have long ignored her, prepares for a family reunion at her home on the Costa Brava.

Miguel, a young man from Chocó who works in a gold mine is implicated in the robbery of a few grams of gold. This forces him to leave his hometown to safe his life and arrive to the capital, Bogotá to start over.

Four Spanish ex-intelligence officers are assassinated simultaneously worldwide. The CNI discovers all participated in the covert "Operation Ciénaga" decades ago in Colombia. Zeta, the CNI's best operative, must hunt and protect the sole survivor, facing his deadliest global mission yet. Top Colombian agent Alfa will join Zeta, seemingly knowing more about "Ciénaga"'s secrets than him.