Facing a life-altering diagnosis, chemistry teacher Walter White teams with former student Jesse Pinkman to cook meth, hoping to secure his family's future.
Walt and Jesse face the messy fallout from their first cook, scrambling to erase evidence and deal with a dangerous loose end as Skyler grows uneasy over Walt's secretive behavior.
With a dangerous captive in Jesse's basement, Walt faces a moral dilemma while scrambling to cover his tracks at home and keep their fledgling operation alive.
After Walter's cancer diagnosis, a fraught family intervention pushes him to decide about treatment. With money tight, he and Jesse consider their next step in the meth business -- despite the growing risks.
Walt considers how to pay for his cancer treatment after reconnecting with former partners who offer help, while Jesse tries to expand their customer base.
Burned by a crooked deal, Walt summons the nerve to confront the underworld and line up a new distributor, while Jesse scrambles to unload their stash and keep their operation under the radar.
Under pressure from a dangerous new customer, Walt and Jesse scramble to expand their meth operation, devising a risky plan to secure supplies as Walt tries to keep his double life from Skyler.