Frank hatches the idea for a new scheme when an unexpected visitor shows up at the Gallagher house. With Tami back in the house, Lip struggles to give up control of Fred. Debbie’s fight for child support escalates and Carl tries to juggle multiple romantic prospects. Ian returns home and is immediately thrown in with a corrupt parole officer.
Frank and Mikey set off on a day of adventure around the city in pursuit of Mikey’s dreams. Debbie discovers a new way to make money in the midst of a strike as Lip leans on his new friend for parenting advice. Carl gets more than he bargained for when he offers to help Anne. Liam grows suspicious of his seemingly perfect mentor.
Liam gets to know his newfound family members as Frank revels in his new position in the Gallagher house. Lip looks for support as the pressures of fatherhood take their toll. Ian and Mickey make a decision about their future, and Carl tries to woo Anne despite Lori’s efforts to get in his way.
Feeling the pressure from Debbie, Frank sets out to make money to keep his place in the house, but Mikey has bigger plans for him. Lip is overwhelmed by the demands of a newborn, and Carl learns more about his mysterious new coworker at Captain Bob’s. Ian and Mickey struggle to keep the romance alive in prison.
Frank milks his injury for all its worth as Debbie, now the self-elected leader of the Gallagher family, cooks up a scam of her own. Lip and Tami get a surprise. Carl returns home from military school and Liam faces an identity crisis.