While on his way to a picnic in Lisbon, Manuel stops to help two foreigners that had a car breakdown. With his tools, he retrieves a bag that contains... 200 thousand dollars worth of jewelery stolen by the two girls in Marbella.
During a tour of the province, someone mistakenly leaves a baby in a singer's car without him noticing. António decides to take the child in, with Madalena, a fellow artist. But the presumed mother, claiming it was a mistake, enlists the help of her brother, a police officer, which leads to a chase to Porto.
