Silver Heart infiltrated the International Space Conference, attended by VIPs from all over the world, to steal the Amethist Globe, but failed, and issued a cry for help to Joker and Spade. His students have no choice but to come searching for their master, but to do it, they'll have to outwit Inspector Oniyama and the conference's strict security! At the same time, President D and Doctor Neo are also attending the conference to fundraise for missile development.