 Zoe is undercover on a routine op, pretending to be a PR agent hoping to land a contract with the Turkish government. She winds up a hostage - along with dozens of others - when a group of Kurds take over the Kurdish embassy and demand the release of political prisoners. However, the team pieces together that this is just a cover, as a group of disgruntled former spooks is using kidnapping and terrorism to gain access to a secret bank account - one with millions of pounds... and the personal identities of every undercover officer.