A young man who has spent a lifetime recycling on the streets of his city, finds an outlet in the materials he collects and knows perfectly.

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.

A psycho clown is on the loose!