Breaking Bad Season 1 Episode 1 : Pilot
Walter White, a 50-year old chemistry teacher, secretly begins making crystal methamphetamine to support his family when he finds out that he has terminal lung cancer. He teams up with a former student, Jesse Pinkman, who is a meth dealer. Jesse is trying to sell the meth but the dealers snatch him and make him show them the lab. Walter knows they intend to kill him so he poisons them while showing them his recipe.