Patricio Crom is an antique guitar collector; that is why, when he runs into a star-rosette guitar -like the one Gardel used-, he sets out to recover its original sound. To do this, he gathers guitarists and specialists who help him achieve the hidden sound of tango.

A young working mother in Buenos Aires, Ana reads a note suggesting a relationship kept hidden by her husband, an executive preoccupied by his job. To solve the mystery she travels a long distance to Rio Escondido, an unimportant river town at the foot of the mountains in western Argentina, and the film becomes a journey of discovery as she finds her heart and her passion. Along the way, truths and perceptions intertwine when Ana meets Martin and she learns who and what he is.

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 evil Nasty comes to our world with two objectives -- kidnap Buji, and carry as much candy as possible back to his world. He has the ability to 'shape-shift', and using the appearance of Dibu, he holds up a bank so that he can get enough money to buy the candy. The police wrongly imprison Dibu, who manages to escape and confront Nasty.