Geiz was able to return home from Helheim successfully, only now he has a renewed determination to kill Sougo at any time, and anywhere! Another Rider suddenly appears in the city, to be striking people down and taking their souls away! Tenkuuji Takeru and Narita of the Supernatural Phenomena Research Institute set out to capture this Another Rider, but as soon as they reach the location, they see none other than… Kamen Rider Agito…