The Squad have been summoned to the deadly and frozen land of the Arctic Circle by the British Prime Minister who has heard of their growing reputation as brilliant young spies. An unknown criminal is trying to hijack a world conference about the precious and much fought-over fuels that lie below the arctic ice. To prevent an international war breaking out, Lily, Lesh, Hatty, Adnan and Kester go undercover to find out who it is and stop them. But the beauty of the icy mountains and deep fjords hide some dangerous secrets and someone will do anything to make sure that the Squad don't discover them . . .