Set in the 1990s, Mongrels is a portrait of an immigrant Korean family that is hired to rid their small Canadian prairie town of a feral dog infestation. Underneath it is a story of a broken, and dysfunctional family trying to find their way in a new world. The narrative is told in three chapters, through the perspectives of Sonny (the father), Ha-Joon (the son), and Hana (the daughter).