Documentary following the work of the London Regional Fraud Team to stop the criminal activity of an eastern European gang making millions of pounds from fraudulent transactions targeting customers of online site eBay. The gang have conned thousands of victims out of money by using multiple accounts and fake emails purporting to be from the site itself, and then used their ill-gotten gains to fund a luxurious lifestyle. Detectives place the gang under surveillance, soon uncovering a complex money-laundering network, and gather evidence for months until the time is right to launch raids on properties across the south east of England.