In this episode, as the group approaches the dwarven capital Idanokan, Satou questions the necessity of the Ring King's role in defeating the Abyss King. Al points out the differing opinions on the matter, but the Great Sage insists that only the resurrected Ring King can stand against the Abyss King. Despite this, Satou is missing a crucial ring, and they find Idanokan deserted and in ruins.

During their exploration, they encounter an automaton in the central palace, reactivated by an Abyss Ring. It reveals the fate of the dwarves as the sole fallen kingdom among the five Ring Kingdoms of the last conflict. A kiss from Hime allows Satou to destroy the automaton, but then all the dark rings vanish and reappear with the Abyss King, suggesting he has acquired all five rings before Satou.

The absence of Idanokan's inhabitants leads the group to explore the underground, typical of dwarven preferences. However, the emergence of monsters from the abyss forces them to flee, as there is no escape route in the tunnels. Al decides to open a gate to his world and sends Satou and the princesses back to evade pursuit by the Abyss King and the theft of the rings. Marse stays with Al, who finds himself in a dire situation.