Deep within Buenos Aires's labyrinthine subway system, a train mysteriously disappears along with it's 30 passengers. The subway officials are greatly troubled and call in topographer Daniel Pratt to help them find it. Unfortunately, the tunnels are so vast and complex, that Pratt needs his mentor Hugo Mistein to help him. Unfortunately, he too has vanished.

The path of a man to restart his life after a personal tragedy that leads him to leave the city and move to an inhospitable place that allows him to be reborn.