When Fiona Gallagher's (Anne-Marie Duff) bag is stolen on a night out in Manchester, a handsome stranger called Steve McBride (James McAvoy) comes to her rescue. He accompanies her to her home in Chatsworth, a deprived inner city council estate, to meet her large family, and the pair begin to grow close, until she receives a visit from the police concerning her alcoholic father, Frank (David Threlfall). Meanwhile, Lip Gallagher (Jody Latham) makes a shocking discovery about his brother Ian (Gerard Kearns) that turns the brothers close relationship upside down, and he also uncovers a shocking secret about the local shopkeeper, Kash Karib (Chris Bisson). Elsewhere, Karen Jackson's (Rebecca Atkinson) father, Eddie (Steve Pemberton), leaves home after catching her in a compromising position.

Frank makes an accidental trip to France, and following a row with Fiona decides to move in with Sheila.