Ozark's third season begins with a bang, literally, as a cartel war erupts between the Navarros and the Lagunas in Mexico in spectacularly gory form. Though much of the action still takes place in the misty wilderness of the show's eponymous locale, what's exploding south of the border has ugly consequences for Marty (Jason Bateman), Wendy (Laura Linney), and all of their friends (and foes) as their latest scheme gets into gear with that violent conflict backdropping everything they do.