In the summer of 1890, Curé Labelle pushed for colonization. To flee Séraphin and the woman he loved, Donalda, Alexis got married and settled on a piece of land. Everyone joins forces to take their revenge on the hateful Séraphin.

After hearing that a famous actress is dying in a hospital after being hit by a car, a reporter goes to the hospital to interview the actress. She then tells the reporter that her wealthy fiance, who was killed in an accident several years before, was actually murdered. Before long the reporter finds herself in a web of corruption, mental illness and murder.

Filmed in French, this Canadian film was based on a popular Quebec-based radio serial. The man of the title is miserable miser Seraphim (Hector Charland). Misanthropic to the point of insanity, Seraphim takes great pleasure in destroying the lives of everyone with whom he comes in contact. His current target is Alexis (Guy Provost), the ex-lover of Seraphim's long-suffering wife Donalda (Nicole Germain). Taking into consideration its daytime-drama source, it's understandable that Un Homme et Son Peche is plotted and paced like a soap opera. Star Hector Charland had previously spent 10 years portraying Seraphim on radio, so he's got plenty of "mean" at his disposal for this big-screen spin-off.

After hearing that a famous actress is dying in a hospital after being hit by a car, a reporter goes to the hospital to interview the actress. She then tells the reporter that her wealthy fiance, who was killed in an accident several years before, was actually murdered. Before long the reporter finds herself in a web of corruption, mental illness and murder.