As Walt copes with the aftermath of the plane crash and Skyler's anger, Jesse comes to a new realization about himself. A new adversary tracks the elusive Heisenberg, Walter White's kingpin alter ego. Skyler seeks advice on the state of her marriage and confronts Walt.
Walt tries to reconcile with Skyler, but when his advances are rejected he takes drastic action to bring his family back together. A confused and angry Walter, Jr. lashes out at his mother. With the help of Saul, Jesse makes a significant investment.
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.
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.
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.
As Walt settles into his new surroundings, Walter, Jr. demands answers about his parents' relationship. Hank's investigation creates an immediate problem for Walt and Jesse.
Hank's increasing volatility forces a confrontation with Jesse and trouble at work. Skyler pressures Walt to make a deal. Gus' actions have severe consequences.
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.
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.
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.
Skyler gets more involved in Walt's business, much to his chagrin. Hank struggles with his recovery. Jesse takes an active role in his new enterprise, leading him to a startling discovery.
Against Walt's advice, Jesse lashes out. Fearing for Jesse's safety, Walt takes drastic action to intervene. A tragic event leads to a shocking confrontation.
With Jesse on the run and Mike in hot pursuit, Walt negotiates a bargain with Gus and concocts a disturbing plan to provide for his and Jesse's safety.