You got to watch it with the captions on, unless you speak their primitive language.
From what I can gather...
-Her husband is a secret big meanie, who is having sexual relationships with another big meanie.
-The big meanie sucking her husband's dick is mad at her because her pussy stinks really bad and leaves a lasting smell of pussy on her husband's dick, which is causing problems because big meanies don't like pussy.
-The big meanie is so infuriated he threatens to kill the wife and her son.
-The son stabs the big meanie in the back with a knife.