PC Kerry Young receives a series of mystery calls, warning her off marrying PC Luke Ashton. PC Ruby Buxton's first day at work is spent showing PC Stamp around the Bronte Estate, where she grew up. Although the gang wars of the past week are all but over, when a prostitute is found badly beaten, it is almost certainly the work of Frank Magorian, newly-released from prison. DS Phil Hunter is running scared, as Magorian is after the blood of the copper he knows has slept with his wife and his daughter. When Hunter sees PC Nick Klein talking to Chloe Kendrick, he tells Magorian that Klein is ""PC Hunter"", which results in a coked-up Klein receiving a brutal beating. Buxton and Stamp pursue a dangerous driver, Craig Gilmore's boyfriend Carl, who crashes Gilmore's car and end up badly injured in St Hughs. Carl admits to phoning Kerry and stealing her engagement ring, but he tells her that Luke is gay, a fact that a flustered Ashton is quick to deny.

Boyden and Tait attend a fight at Harvey Wallace comprehensive and discover that one or two of the pupils are acting strangely around their teacher, Sonia Graham. While Tait is smitten, Boyden discovers that rumours are escalating that Sonia is having extra-marital relations with some of her students. Meanwhile, Ashton and Buxton attend a fire at a public convenience, and find two young girls trapped in the toilet cubicle. When Ashton manages to free them from danger, they both make good their escape and Ashton suspects that something is wrong. Glaze and Webb attend a shooting at a local gymnasium, where they find that none of the witnesses are willing to offer any information.

Sun Hill police officers swoop into London's Chinatown to locate and arrest corrupt interpreter Mai Ann Wey. Desperate to make amends to Sgt. Sheelagh Murphy, PC Des Taviner manages to catch Mai Ann when she eludes the rest of the team. DC Mickey Webb is in turmoil after witnessing Supt. Adam Okaro having a friendly meeting with a suspected paedophile. Even a sceptical Insp. Gina Gold begins to have her suspiscions about Okaro when Webb sees him taking his own daughter to Gregory. Okaro is furious when Webb charges into a delicate covert op to ensnare Ron Gregory. Gregory is arrested, and the ""child"" in his boot is revealed to be civillian Front Desk Officer Roberta Cryer. Since there is so little evidence against Gregory, his solicitor demands his release. As Mickey drives Robbie home, they realise that Gregory's solicitor, Warren Napier, is in the paedophile ring as well. The pair break into Napier's house, and find a frightened little African girl in an attic room. As they try to es

Ackland finds she is becoming too personally involved with the domestic violence case when she tries to protect victim Monica Skinner from her husband, Sean, by forcing her to testify against him. When Monica and her boyfriend are found attacked, suspicion immediately falls on Sean, but Carver isn't too sure. Buxton finds herself having to lie in her statement when she naively purchases cheap electrical goods from an old friend, later to discover they are stolen. A drug dealer is brought in for questioning and offers to provide information on Klein in return for a deal. Okaro catches Murphy in throes of passion with Taviner, and is accused of being soft on prostitution by a local councillor.

Sgt. June Ackland has discovered PC Cathy Bradford has barricaded herself and DC Brandon Kane's kids in the station's boiler room. When Cathy promises to release the kids in exchange for Brandon as a hostage, Insp. Gina Gold refuses, but Supt. Adam Okaro overrides her decision. Cathy insists Brandon must choose one child, but he manages to negotiate Zoe's release as well. Forcing Brandon to handcuff himself, Bradford relives the events of the past year, including the death of Brandon's wife Tanya. The station is evacuated, and the TSG arrive to provide support. Cathy's stories become increasingly unbelievable, as she tells Brandon that she was abducted by a serial killer as a child. DS Samanatha Nixon and DC Eva Sharpe trawl through Cathy's belongings and find that was not true. When Cathy moves Brandon out of range of the TSG probe, Okaro authorises TSG to force entry into the room. Brandon manages to overpower Cathy, but she lights a petrol fire intending to kill them both.