The next morning, Perseus presents himself as the next husband to be and correctly answers the riddle, winning Andromeda's hand in marriage. Finding that Thetis cannot act against Perseus, Calibos instead demands that she takes vengeance on Joppa. At the wedding in Thetis' temple, Queen Cassiopeia declares Andromeda's beauty greater to that of Thetis herself, whereupon an earthquake shakes the temple, causing the head of the statue of Thetis to break off and crash to the floor. Thetis, using the statue's head to speak through, demands Andromeda be sacrificed to the Kraken on pain of Joppa's destruction. Perseus seeks a way to defeat the Kraken, but Pegasus is captured by Calibos and his men. Zeus commands Athena to give Perseus her owl Bubo, but she orders Hephaestus to build a golden replica of Bubo instead, who leads Perseus, Andromeda, Ammon, Thallo and some soldiers to the Stygian Witches. By taking their magic eye, Perseus forces them to reveal that the only way to defeat the Kraken is by using the head of the gorgon Medusa whose gaze can turn any living thing into stone, who lives on an island in the River Styx at the edge of the Underworld. The next day, the group continues on their journey without Andromeda and Ammon, who return to Joppa.