In order to revive the Stone Robot and restore Tantar and Tuntar's river, Ryu and his party must first obtain the KngKey from Agua. To enter Agua, the party must first obtain the Tablet from Romero. After reading from the Tablet, Agua lowers and the party enters from the bottom. After climbing up through Agua the party discovers a pillar guarded by Wisp. After defeating Wisp the party obtains the KngKey.
Activating the machines in Agua with the goddess keys causes the towers of Pagoda to rise, releasing Tyr into the world once again.