It's fall in Chicago. Frank is still mourning the loss of Bianca while his newfound appreciation for life is freaking the Gallaghers out. Fiona is determined to get Debbie to the clinic for a pregnancy test and to get Ian to take his meds.
Debbie's determined to keep her baby while Fiona's determined to persuade her to abort. Debbie carries a bag of flour around all day to prove Fiona wrong about her ability to raise a child while going to school. She quickly realizes people are not as accommodating to mothers and babies as she hoped.
Frank teaches Debbie how to work the welfare system to her advantage. Kevin and Veronica visit a paralyzed Yanis in the hospital and try to make amends - only to have Yanis arrive home and try to hug the two Lisas with Kev's van.
Fiona confronts Patrick about the eviction notice, but her only choice is to get a mortgage from the bank and bid on the house at auction. Ian bakes cookies for the firehouse and discovers he was saved by the shift of gay firemen.
While Frank helps Erica through the cancer concierge process, Debbie ups her game as a shoulder for Tyler to lean on, securing the guestroom in their house that Frank's determined to share. Meanwhile, Lip tries to protect Helene from the fallout of Amanda's disclosure, but she won¿t talk to or see him anymore.
Ian's relationship with Caleb becomes more serious. Lip has to appear before a disciplinary committee.
Carl struggles with Nick's absence, continuing to put up false hood bravado. He takes over the Gallagher home, remaking it as his "crib" and inviting his friends over to party and make music. Frank and Queenie rule the house - and Debbie returns when she's let go by Erica and Tyler.
Fiona, now living with Sean, attempts to get his son, Will, to like her. He starts to come around, but when Will snags one of Carl's guns at the Gallagher house, Sean catches him and is furious with Fiona, worried he'll lose custody.
Fiona tries to make amends with Sean, who isn't giving her the time of day. Meanwhile, Debbie and Queenie travel to Queenie's rural commune along with Frank who is trying to escape G-Dogg who's after him for stealing his drugs.
Sean ends up moving into the Gallagher house. Fiona makes plans for a traditional wedding.
Frank offers to pay for Fiona's wedding reception and then goes scamming around town to raise the money. Meanwhile, Sean fears that Frank will end up hurting Fiona and confronts him on it. Their difference of opinion quickly descends into a brawl.
During Fiona's wedding Debbie shows up at the church with Franny, and Frank arrives uninvited and high, and reveals that Sean is still a practicing junkie. Meanwhile, Ian brings Caleb to meet the family; and Sean tries to do everything he can to keep his son in his life.