Traveling dentist O'Connell traverses South America on his motorcycle for the 'Eversmile' foundation of New Jersey, in a fight not only against cavities, but also against fear, ignorance, indifference - and established antediluvian dentists. During a stop at a lonesome garage he meets Estella, who is supposed to marry a few days later. However she'd rather come with him - to meet a former boyfriend in another town, she says. Expecting problems, he refuses to take her, but she tricks him into it and then tries hard to convince him of her qualities and let her stay with him.
After the end of the military dictatorship in Argentina in 1983, Floreal is released from prison. Instead of returning to his wife, he wanders through the night of Buenos Aires. He meets some people from his past–most of which are only imaginary–and remembers the events of his imprisonment.
A reporter becomes involved with a band of terrorists hiding in the mountains between Peru and Bolivia.
In 1965, a man named Matías is taken to a psychiatric hospital, after being found at the streets, "in the company of homosexuals and in a state of intoxication by alcohol and drugs". His documentation says he's 41 years old and born in Poland. He says his mother was an aristocrat. His arrival will have a profound impact on the institution and, especially, on one of the doctors.