Hakone-chan wird von 2 neuen Onsen Geistern attackiert.
Hakone and Miya, accompanied by Haruna, Aki, and Tōya, are returning to Motohakone via the Tekkosen. Miya tries using her Water of Servitude to deal with the crowds, but that left her open for Gōra to snatch her secret puzzle box. Hakone goes after them to retrieve it, making Miya realize (through Tōya) that Hakone does not see her as an enemy, but as a friend. Miya is then urged to help Hakone. Miya is able to lunge at Gōra and take her puzzle box back. She then unleashes its powers, making Gōra grovel uncontrollably. As the ship returns to Motohakone, everyone races back to the shrine.
本箱根に向かう船上で景色を眺めるハコネちゃん達。船室への帰り道が大混雑！ミヤが秘密箱で解決しようとすると、ゴウラとアシノコが現れて秘密箱を奪ってしまった。二人の目的は箱根の温泉精霊を仕切ること！？
En pleine croisière, Hakone et Miya vont devoir affronter Gôra et Ashinoko. Ces dernières étant de nouveaux esprits des sources, elles ne feront pas de cadeau à leurs rivales.
Ci sono due nuovi spiriti delle terme che ce l'hanno con Hakone.
