Breaking Bad is an American action series that follows the story of Walter White, a high school chemistry teacher turned methamphetamine manufacturer. As Walter delves deeper into the criminal underworld, he becomes the notorious drug lord known as Heisenberg. The series explores themes of morality, power, and the consequences of one's actions. With its intense action sequences and gripping storyline, Breaking Bad has become a cult classic and is widely regarded as one of the greatest television series of all time.