An important scene from the very first episode of Breaking Bad references the show’s title and reveals a lot about Walter White’s character. By the end of Breaking Bad, Walt has fully transformed into the ruthless Heisenberg. However, at the beginning of the series, Walt is just an average family-man and high school chemistry teacher. The story of Breaking Bad begins when Walt finds out he has lung cancer, which prompts him to team up with one of his former students, Jesse Pinkman, to cook and sell meth.

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