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