Gabriel and Sergio meet at the psychiatric hospital where they are interned. Gabriel is a rebellious and violent young man marginalized by society. Sergio is a programmer and systems analyst and has an enviable attitude to fight against life. Soon the promise of fighting against injustice unites them.

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.

Javier Borges wakes up alone and abandoned on the shore of a beach outside Punta del Este. After a long walk, he finds a ringing cell phone. When he answers it, he discovers that his new boss will give him instructions on how to start working as a secret agent.