Secret Agent Zero Zero K has given Secret Agent Zero Zero G Geronimo a new mission: to solve the mystery of the talking lion statue in Trafalgar Square, behind which lurks a mysterious villain who is claiming the Crown Jewels ! And as if that weren't enough, Traquenard, who has come to London, wants to take part in the biggest illusionism competition in the world. Finally, Traquenard... As usual, Geronimo finds himself taken on board by his cousin and must perform the most difficult magic trick there is: to make Big Ben disappear! Fortunately, this competition will be an opportunity to solve the mystery of the talking statue and unmask the thief.