Walter White, a New Mexico chemistry teacher, is diagnosed with Stage III cancer and given a prognosis of only two years left to live. He becomes filled with a sense of fearlessness and an unrelenting desire to secure his family's financial future at any cost as he enters the dangerous world of drugs and crime.
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.