Plot
Fiona begins her new role as landlord of a local apartment building; she gets to know several of the apartment tenants, including Nessa (Jessica Szohr), a lesbian resident, while regularly facing problems within the neighborhood. Nessa introduces Fiona to Ford (Richard Flood), a mysterious Irish carpenter with a colorful past. Fiona bonds with Ford, who helps Fiona deal with a family of apartment squatters trying to sue her. The two eventually begin a sexual relationship. At the end of the season, Fiona confronts Ford about the state of their relationship; Ford reveals that he's happy in their relationship, but that he'll never be "madly in love" with her or anyone.
Ian has begun regularly helping teens at Trevor's youth center, and he and Trevor plan to convert an abandoned church building in Fiona's neighborhood into a homeless shelter. However, Fiona—wanting to raise the profile of the neighborhood—wants to convert the empty church building into an art gallery. The argument over the church building results in an ongoing feud between the two siblings. Fiona ultimately gets one of her connections to lease a new property to Ian and Trevor.
Lip continues to work at Brad's motorcycle shop, though he is forced to find a new sponsor when Brad, stressed from the birth of Cami's new baby, relapses. Lip briefly begins a casual relationship with his female co-worker, Eddie (Levy Tran), but is turned off by her rough nature. Meanwhile, Professor Youens gets charged with his fifth DUI, and he is sentenced to prison after appearing in court under the influence. Youens later dies in prison from a seizure; at the memorial service, Lip is dispirited upon discovering he was not the only student to have had a mentoring relationship with the professor. Sierra has rekindled with Charlie, who reveals to Lip that he had knocked up another girl during his separation with Sierra. Lip urges Charlie to tell Sierra the truth, but this backfires when Sierra angrily dumps Charlie over the secret baby. Initially finding comfort in Lip, Sierra breaks up with him when he encourages her to give Charlie a second chance.
Following his breakup with Sierra, Lip discovers Eddie's young niece, Xan, sitting alone in the motorcycle shop; Brad reveals that Eddie had abandoned Xan, who is estranged from her parents, at the shop. Upon discovering that Eddie had planned for Xan to be picked up by Social Services, Lip takes in Xan and invites her into the Gallagher home.
Elsewhere, Frank works towards becoming a reformed man following Monica's death. He successful lands a job at a local store, but quickly regresses to his old ways when the store is shuttered by corporate. Carl begins dating Kassidi (Sammi Hanratty), who suffers from separation anxiety. Kassidi pressures Carl into marrying her, and the two falsify documents at the courthouse to get married; however, Carl breaks up with her when she goes to obsessive measures to prevent him from attending military school. Debbie becomes a welder and reunites with a newly remerged Derek, who wants joint custody of Franny. Kevin and Veronica take back the Alibi from Svetlana, who agrees to partial ownership of the bar. Kevin and Veronica later help Svetlana marry a senile elderly sugar daddy, after which Svetlana moves out of Kevin and Veronica's house.
As the season progresses, Ian stops taking his medication and starts to spiral; he initiates a protest against a homophobic pastor preaching gay conversion. When the protest goes viral online, Ian gains numerous supporters who agree with his message. Reeling from his newfound popularity, Ian is nicknamed "Gay Jesus" by his followers, while Frank takes advantage of the Gay Jesus movement to make a profit. Near the end of the season, Ian provides sanctuary to a runaway teen whose father is trying to harm him for being gay. Ian gets into a confrontation with the teen's father; the confrontation concludes with Ian, in a grand gesture, exploding the father's vehicle. The incident results in a warrant being placed for Ian's arrest. A concerned Trevor consults with Fiona over the warrant, while Ian begins a protest at a community college. The police quickly arrive to the protest and arrest Ian; the family witnesses Ian's arrest via television.
