Alys and her son Daniel move to a small West Wales town to make a fresh start and to escape their past from Cardiff.
Alys steals from the clothes shop below her flat, Daniel gets into a fight on his first day of school. Alys begins to have nightmares about her past in Cardiff.
Alys steals books from the library and is spotted by Wiliam's nephew, Iestyn. Kevin and Shane find the chinese empty and a decapitated body in the room upstairs. Debbie becomes suspicious of Alys and Toms. Alys and Ceri go out for the night while Kevin is supposed to be watching Daniel, and Ceri begins to act strangly when she recoginises their taxi driver. Ceri self harms herself.
Alys realizes that Ceri knew all along about Kevin and Vicky and their child. Angie and Chris discuss Alys' private life, and Chris confronts Alys about being on the game. Alys finds the taxi driver looking around outside the flats. Ceri attacks Kevin. Alys is caught stealing from a hotel.
Ron offers Alys a job as a cleaner at his house, and Debbie warns Alys to stay away for her own good. To avoid his and Ron's secret being discovered, Toms tells Kevin and Shane to break into Ron's house and steal his laptop. Debbie and Ron return to find the their home has been broken into and Debbie finds her dog, Toots dead. She tells Ron not to report it as she know whats on the laptop. Alys begins to search for the taxi driver, as it turns out that he raped Ceri. The taxi driver later turns up at the flats and attacks Alys.
Alys, Wiliam and Ceri find the taxi driver and take revenge. The search is on for the stolen laptop, while Debbie tells Ron that she knows there are pictures of young girls on it, Toms searches the flats and threatens Kevin who wants money for returning the laptop to him. Heulwen visits her sister who she hasn't seen in twenty years, her sister turns out to be Alys' mum, but Heulwen doesn't know that it's the same Alys who lives close to her. Wiliam is told that he is invited to his daughters wedding. Shane is arrested in connection with the body found at the Chinese. Alys lends the laptop from Kevin's flat and she and Wiliam discover whats on it, Toms shows up at Alys' flat.
The laptop is still missing, Alys is demanding money from Debbie and Ron for the laptop or she'll go to the police, Kevin is demanding Toms give him the money but wants Alys to stay out of it, but Alys needs the money because she thinks it's time she and Daniel moved to America, Bessie then threatens Alys to stay away. Wiliam goes to his daughter, Catrin's wedding reception where she and her new husband are happy to see him, but he gets drunk and leaves early. Rons pays two men to go the flats to shut Alys up, but when they find she isn't there, the attack Wiliam, Alys turns up and tries to save him.
Alys goes to see Wiliam in hospital after the attack, there she reveals to him that she killed her boyfriend, Mike, by causing the car crash. She returns to the hospital later to discover he is gone and goes to his flat where Iestyn tells her she has nothing to do with him. Debbie plans to give Alys the money in exchange for the laptop, but Ron has a heart attack while trying to talk her out of it. Alys can't find the laptop as the council have taken everything from the yard, and tells Debbie. Alys discovers that Heulwen is her aunt. Ceri decides to go to the funeral of the 17-year-old girl that the taxi driver has raped and murdered, but when she goes to the house of the girls family, she find it empty with only the taxi driver inside, will she survive? Toms tells Shane to set fire to the garage, but Kevin tries to stop him. Daniel tells Alys that he has the laptop hidden, and while in the Wiliam's empty flat they hear an explosion, they look to see from a distance that the garage in on fire, what has happened to Kevin and Shane?
Has Shane found love at last, and what will Kevin think? Alys discovers Phil's secret, while an old college friend of Dylan's threatens to divulge a few secrets from his past.