Walt and Jesse are vividly reminded of Tuco's volatile nature, and try to figure a way out of their business partnership. Hank attempts to mend fences between the estranged Marie and Skyler.
A building collapse at a rodeo injures a cowboy (Timothy Busfield), who begins to show bizarre symptoms. Meanwhile, a patient appears to be suffering from an appendectomy that Krista had performed weeks earlier, and Scott causes a serious car accident and insists on treating the teen victim.