The next morning, Alexander leads the group to the lost city of Atlantis, which is usually submerged in the ocean, and he also calculated that the island sinks once every 70 years. However, the evidence that Hank sees leads him to prove that the calculations are wrong, and that the island will sink in a couple of days. Their only means of salvation seems to be the legendary Nautilus (Captain Nemo's submarine), hidden somewhere on the island. Kailani enters Nemo's crypt and finds his journal, which has the whereabouts of the ship just off Poseidon's Cliffs, in a cave. They decided to go to that cave through the heart of the island.
They mount giant bees in order to fly over a high ridge and make up time, but encounter large birds that try to devour the bees. After saving Kailani's life, Sean crashes and dislocates his ankle. Hank and Alexander later patch up Sean's ankle the best they can. Afterward, they have a good moment when Hank sings his rendition of "What a Wonderful World" to ease Sean's pain.