Your favorite Raildex Universe characters gather for the epic conclusion to A Certain Magical Index. World War III has broken out, and every faction of the Church and Academy City is swept up in the chaos. The true identity of DRAGON spells trouble, and Accelerator learns that Last Order's life is in danger. Meanwhile, Toma is on a mission to defeat Fiamma, leading him and the others to Russia for one final battle between magic and science.