Shippo receives a letter issuing a challenge against Soten, the last surviving member of the thunder y?kai tribe. Shippo is soon captured by Soten, much to his dismay. Miroku and Sango fall into a trap set up by Koryu, Soten's dragon y?kai partner. However the plan backfires with InuYasha and Kagome, as Koryu is declared vulnerable against them. After enlightening Soten with his art, Shippo duels against him, with a handful of crayons as the prize. After the crayons are given by Shippo, Soten develops a crush for him.