The very first episode of Breaking Bad, which set the tone for the greatest show of our time, began by introducing us to Walter White, a mild mannered chemistry teacher.
The Albuquerque man secretly begins making crystallized methamphetamine to support his family after learning that he has terminal lung cancer.
He teams up with a former student, Jesse Pinkman, who is a meth dealer. Jesse tries to sell the meth they made, but the dealers snatch him and make him show them their lab, which is in an old RV.
Walt knows the dealers intend to kill him, so he poisons them while pretending to share his recipe. An epic chase scene follows and an empire is born.