Walt becomes obsessed with a contaminant in the lab and refuses to finish the cook until it is eliminated. A frustrated Jesse attempts to get Walt back on track.

Events spiral out of control at Jesse's place. Skyler reluctantly asks for Saul's help. Marie returns to an old pastime and a friend asks Hank for help.

Walt loses control as he reacts to Skyler's news, endangering his job and relationships with Saul and Jesse. Hank throws himself into his blue meth investigation. Jesse enacts a new plan.

Walter finally tells his family that he has been stricken with cancer. Meanwhile, the DEA believes Albuquerque has a new, big time player to worry about. Meanwhile, a worthy recipient is the target of a depressed Walter's anger, and Jesse makes a surprise visit to his parents home.

Walt attempts to reconnect with his family, while Jesse struggles to rebuild his life.

Hank suffers from the aftermath of his encounter with Tuco. Meanwhile, Jesse hires a crew to get their product out on the streets.

Walt attempts to form a new alliance as he plans his next move. Skyler pushes Walt towards a business opportunity, in hopes of protecting the family.

Walter and Skyler attend a former colleague's party. Jesse tries to free himself from the drugs, while Skyler organizes an intervention.

Walt and Jesse become short on cash when they try to cover their tracks. Meanwhile, the DEA has a lead that could them straight to Walt and Jesse.

Walt and Hank get into a heated argument at a party. Skyler opens up to her boss. Jane hides her relationship with Jesse from her father.

Walt ignores Skyler's demands, furthering the rift between them and pushing her to break bad. Still suffering from panic and anxiety attacks, Hank crosses a line at work.

As Hank's hospital bills stack up, Skyler hatches a plan. Walt and Gus come to a better understanding. Jesse, looking for more independence, pursues a new opportunity.

Skyler gets involved with Walt's business. Hank struggles with his recovery. Jesse makes a startling discovery after meeting a girl at group therapy.

Skyler makes an unsettling discovery. Walter, Jr. pushes his dad into a questionable purchase. Jesse offers Mike some unexpected help.

Walt faces a new threat, on a new front and deals with an increasingly angry Skyler, who must consider what to do next with her life and the kids. Meanwhile, Jesse comes face-to-face with some startling self-revelations.

Gus increases his efforts to lure Walt back into business, forcing a rift between Walt and Jesse. Skyler doubts her new relationship. Marie confides in Skyler about her concern for Hank's well-being.

The Cartel takes steps to gain the upper hand. Walt and Skyler share an embarrassing secret with the rest of the family. Jesse's activities draw unwanted attention.

Walt and Jesse attempt to tie up loose ends. The desperate situation gets more complicated with the flip of a coin. Walt's wife, Skyler, becomes suspicious of Walt's strange behavior.

Walt and Jesse are vividly reminded of Tuco’s volatile nature, and try to figure a way out of their business partnership. Hank attempts to mend fences between the estranged Marie and Skyler.

Jesse and Walt discuss expanding into new territories; Hank struggles to fit in; Skyler pursues a new job opportunity; Jesse gets to know his landlord.

Despite ever-increasing tension between Walt and Skyler, he pulls out all the stops in an effort to reconcile with the family. Elsewhere, Saul is instrumental in getting Jesse involved in a most-unusual investment opportunity.

When Jesse goes missing, Walt fears the worst. Skyler has an unlikely reunion. Hank shares some bad news with Detective Tim Roberts.

Walter fights with Jesse over his drug use, causing him to leave Walter alone with their captive, Krazy-8. Meanwhile, Hank has a scared straight moment with Walter Jr. after his aunt discovers he has been smoking pot. Also, Skylar is upset when Walter stays away from home.

The family waits for news about Hank. While Jesse covers at the lab, Walt attempts to placate Gus. After witnessing a disturbing outburst, Walt worries he and his family are in danger.

Walter accepts his new identity as a drug dealer after a PTA meeting. Elsewhere, Jesse decides to put his aunt's house on the market and Skyler is the recipient of a baby shower.