Impurity People begin to display a compulsion for cleanliness, including Kiyoshiro, and Hiro and Ruli discover that they are being transformed into wooden puppets. Ruli is captured by the culprit, Kuzuhamon, who intends to remove "impurities" from people by extracting their souls and preparing a ritual to "purify" them. Kuzuhamon attacks Hiro, but he and Gammamon fight back, with Gammamon Digivolving into his Mega evolution, Siriusmon, for the first time, and defeat her. After recognizing that Hiro and Gammamon's bond is special, Kuzuhamon gives up on the ritual and returns her victims to normal.