"Bloque de búsqueda" tells the untold story of Coronel Hernán Martín and Capitán Antonio Gavilán, the men who created and commanded the elite police corps, responsible for tracking and killing Pablo Escobar. Not having all the resources needed Gavilán and Martín resort to all sorts of strategies at the edge of legality. At time allying with enemies and putting their lives and their families at risk in order to bring the most ruthless and elusive criminal in Colombia to justice.