A blast from the past shakes up Fiona's view of her life. Frank gets involved with Liam's school and becomes the most popular dad in the PTA. Lip learns getting laid is harder than anticipated when sober. Ian crosses a boundary with a kid from the youth center. Kev and V take a trip to meet his birth family.
Elenco: William H. Macy , Emmy Rossum , Jeremy Allen White , Cameron Monaghan , Emma Kenney , Ethan Cutkosky , Steve Howey , Shanola Hampton , Joan Cusack , Noel Fisher , Noel Fisher , Shanola Hampton , Stephanie Fantauzzi , Steve Howey , Zach McGowan .