A few weeks before the Season 4 finale of Indéfendable, two former clients of the Lapointe, MacDonald & Nolin law firm, both acquitted of separate crimes, find their destinies intertwined. As one man has long harbored a secret obsession, a series of events sets off a dangerous spiral. When a murder makes headlines, the defense team discovers that an acquitted client may be far more dangerous than they ever imagined.