While Artie and Claudia meet with Vanessa Calder and Hugo Miller to investigate a computer virus that transforms people into clay, Myka and Pete wake up naked in bed and try to find a missing Steve.

Hal takes the lead fighting an unexpected threat against the children of the 2nd Mass. Anne has her hands full when Sarah goes into labor while the 2nd Mass base is being evacuated.

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.

Mike's life becomes complicated when an old friend reappears and needs his help. Harvey must decide between closing a multi-million dollar deal and helping his trusted driver defend himself against a law suit.

When an expert hacker drains a prominent New York bank, Neal assumes the criminal's identity in order to spend the pilfered fortune and draw him out of hiding.

Carter's duties expand to babysitting when Allison attends a medical conference, and Fargo finds his groove when a certain song is played. Meanwhile, a rocket scientist appears at Café Diem.

While Pete and Myka go after someone using an artifact to induce Alzheimer's, Claudia goes on her first case as a full agent with Steve to track down Typhoid Mary's knife.

Lt. Terry Clayton of the 7th Mass arrives with word that the aliens are on their way to attack the 2nd Mass. Clayton’s plan to lead the children to a safe haven while the adults remain behind to fight is met with some resistance from the parents, including Tom.

Walt and Jesse face the deadly consequences of their actions. Skyler deals with a puzzling disappearance, as Marie struggles to help Hank with his recovery.