In Port-au-Prince, violence never consumes. It finds its counterpart in a "high-pitched sweetness", a sweetness that overwhelms Francis, a French journalist, one evening at the Corossol Restaurant-Bar, when the broken, rich voice of lounge singer Brune rises from the microphone.

Brune's father, Judge Berthier, was assassinated, guilty of maintaining integrity in a city where everything is bought. Six months after this disappearance, Brune wholly refuses to come to terms with what happened. Her uncle Pierre, a gay man who spent his youth abroad to avoid persecution, refuses to give up on solving this unpunished crime.

Alongside Brune and Pierre, Francis becomes acquainted with myriad other voices of Port-au-Prince, including Ézèchiel, a poet desperate to escape his miserable neighborhood; Waner, a diligent pacifist; and Ronny the American, at ease in Haiti as in a second homeland.

Drawing its power from the bowels of the city, Sweet Undoings moves with a rapid, electric syncopation, gradually and tenderly revealing the richness of the lives within.