Renzo Brunetti tries his hand at a new case that stems from its past as a former policeman.
The enemy tried to destroy returns to his door hungry for revenge.
While his familiar world seems to collapse under the blows of an inexorable fate, Renzo will fight on unequal terms against the most powerful forces of him and especially without the ability to defend themselves.
The only consolation, his high school boys with whom continue the growth path made of experiences, mistakes, but also of great satisfaction.
In a crescendo of events, the truth eventually will manifest in his painful and at the same time reassuring incoherence.