Lisbon, 1981. Judicial police officer Júlio Mendes, known by the nickname Pacino, receives a request for help from the car radio. Upon arriving at the crime scene, he sees the criminal disappear into a closet. Following him, the officer finds himself in a strange world that he discovers to be the year 2016. Because Pacino is armed he is taken by robbery and arrested by the police. In the Ministério do Tempo no one can find out where Tiago is. Amélia is the one who misses him the most. Salvador is alerted to the capture of a wanted killer since 1981. The reason this matter is brought to the Ministério is simple. The suspect did not age one single day, despite 35 years have passed. It's the same man Pacino followed. Salvador gives orders for Pacino to be transferred to the Ministério. After being cleared of the crime, the PJ officer is ready to help capture the murderer, whom he believes was responsible for the disbelief of his father, also a police officer, in a case similar to this one, which happened in 1946... Salvador and Ernesto are sure about one thing: they're facing a serial killer with the ability to travel in time. After the case is settled, Pacino isn't satisfied. Now that he knows the secret of time travel, he wants to change the past. He wants to avoid his father's suicide. For that he'll have an unexpected help and doesn't care if he has to put the lives of all members of the Ministério do Tempo in jeopardy. Neither if he changes the story in an unpredictable and dangerous way.