Claudio, Moreno and Giuseppe return to 1970 in search of the latter's real mother, ending up entangled in student struggle, happenings... and acid.

After discovering that his mother would die in an attack, Giuseppe decides to save her; his action could change the time axis of the present.

The friends must return to the past to put the time axis back in place: the objective is to defeat Borghese's fascist coup.

By infiltrating the subversive right, the friends try to find out more about the Borghese Coup; all this while Claudio seems to enjoy it.

Kidnapped and tortured by agents of the new Italian dictatorship, Gianfranco also returns to 1970, but is followed by a secret agent who wants to save the status quo.

It's the day of the coup, but a chain of events makes the plan difficult to carry out; all seems lost when unexpected help arrives at Rai in via Teulada.