Four friends in their 40s find out a deceased old flame of theirs had a child, conceived with one of them during an Erasmus (EU student exchange program) in Portugal 20 years earlier. They embark on a journey in search of the offspring, while waiting for the DNA results to find out which one is the father.

Set in the romantic and multicultural city of Lisbon, the love story between a shy Brazilian man and a fearless Portuguese young woman is haunted by secrets from his past.