en CB01 OFFICIAL. Potosí appears like a ghostly mirage at 1,185 meters above sea level. Thirty years have passed since the town was submerged in water. Justo Pérez's family was the last to leave the place. One day, fate comes again to the ruins of the town, and reminds them through the death of Jesus, of the crime and the swamp of which they were victims thirty years ago.