Paula, a 22 year-old student, witnesses the murder of her beloved father, a popular political sciences professor at a public university in Medellin. From the distance, she catches a glimpse of the murderer as he beats a hasty retreat on a motorcycle. Devastated by the pain of their loss, Paula and her family will have to deal with official lethargy. The authorities will make no effort to clarify the events and the case is soon archived and abandoned. When Christmas comes round, a couple of months after the murder, Paula accidentally bumps into Jesús, the young man who killed her father. So what happens when revenge becomes a real possibility?