Lip begins a hotel scam with his new friend, Jack, to make some easy money. He also uses his new friendship to get closer to Jack's sister. He may live to regret introducing him to the Gallaghers, however, when Ian begins an affair with Jack. However, Ian soon learns that Jack is not as straightforward as he seems when a violent robbery leaves Kash hospitalised. Determined to deal with Jack, Ian's attempt to convince Lip of his friend's dark side tears the Gallagher boys apart, with all roads leading to a violent showdown between the three boys at The Jockey's karaoke night. Meanwhile, Frank spots an opportunity to make money when Kelly, Kev's ex-junkie sister, arrives in Chatsworth looking for a place to stay. Kelly's numerous lovers reignites the spark in Frank and Sheila's sex life. However, Frank soon discovers that Kelly is a prostitute. Elsewhere, Debbie is annoyed that Sue is living at the Gallaghers without paying her way, so Marty becomes a handyman, soon finding himself in a compromising position with Lillian.