As Walt deals with the aftermath of the Casa Tranquila explosion, Hank works to wrap up his investigation of Gus’ empire.

Walt’s family worries when he doesn’t turn up for Walter, Jr.’s 16th birthday. Jesse is forced to put his lab skills to the test without Mr. White’s help.

Walt takes drastic action to protect his secret and Gus. Skyler’s efforts to solve Ted’s financial problems hit a wall.

Skyler’s past mistakes come back to haunt her. Gus takes action to thwart his rivals. Jesse seeks Walt’s help, with mixed results.

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 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…

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…

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…

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.

When unforeseen circumstances cause Walt and Jesse to lose some dealers, Saul suggests they add a new business partner. At work, Skylar confronts Ted about the unnerving information she had…

As Walt explores money laundering options, he and Jesse spar over the profits from their latest deal. Jesse and Jane clash with her father. Walt makes a fatal decision.

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.

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.