Deakin mounts an OBBO to catch a girl gang who have been robbing punters in nightclubs and casinos. Sending Skase undercover to pick up one of the girls, he finds himself ambushed and humiliated, but Deakin is furious about his decision to go to the girl's car instead of his own where the OBBO team was situtated. The following morning, Skase and Lennox get another case in which a car dealer was robbed for his car and a quantity of cash at a local casino. Meanwhile, Boulton is left heading up a drugs investigation when Proctor has to conduct CPR during the raid and another girl comes in reporting her sister fatally overdosed, with both users told the drugs are called "flat-liners". Elsewhere, Harker and Rickman attend a disturbance where two local girls have vandalised the house of a neighbourhood watch coordinator, whose camera has recorded an apparent drug deal. As the dots connect, it appears all three cases are all down to the same girl gang.