Kirinda and the Eto Rangers discover that the enemy stronghold is actually the previous Mugen which sank into the ocean long ago. To confront Nyanma, they descend the Dark Novel Pole to have Rouran awaiting them in the Dark "Urashima Tarō" World. As the whole team proved to be no match against the improved Rouran, the Great Spirit God, Goal appears to bestow the Rangers a powerful gift.