A showdown with Gus occurs but Jesse is held under suspicion that he has poisoned Brock. However, Jesse is able to suggest an ally for Walt through Saul's help.
Hank pushes Gomez and the DEA to pursue a lead. Jesse gets alarming news while Walt struggles to protect his family.
Walt takes action to protect Hank but when Walt learns of his new plan, Walt is forced to take drastic action. Skyler's efforts to solve Ted's financial problems hit a wall.
Jesse, Gus, and Mike head to Mexico where Jesse must show the cartel the recipe. Skyler and the rest of the family worry when Walt doesn't show up for Walt Jr.'s birthday. Saul and Skyler try to help Ted.
Skyler's mistakes come back to haunt her; Gus takes action against his rivals; Jesse seeks Walt's help.
Skyler develops a solution for her money troubles; Hank enlists Walt to investigate a theory; Walt grows impatient with Jesse.
Hank presents his ideas to the ABQ police department. Walt and Skyler figure out the logistics of laundering through the car wash. Mike and Jesse continue their security work together.
Walt meets up with Bogdan, the disgruntled car wash owner. Walter Jr. pushes the purchase of a car. Jesse, meanwhile, continues to team up with Mike after putting in his hours at the superlab.
When Jesse goes missing, Walt fears the worst. Skyler has an unlikely reunion. Hank shares some bad news with Detective Tim Roberts.
Events spiral out of control at Jesse's house. Skyler asks for Saul's help regarding the carwash. Marie returns to an old pastime and in the process a friend asks Hank for help.
Walt is held at the lab by Mike while Victor attends to Jesse who is still at Gale's apartment. Mike informs Gus about the situation and arrives at the lab with deadly consequences.