the ship; Charley tearfully pleads with Hanson for Connerly's release, and Hanson relents and frees him. Meanwhile, Leoncavallo and Toshi take a romantic interest in one another. The Batavia Queen arrives off Krakatoa to find the island shrouded in thick smoke. It clears when she anchors off the island, and the Borgheses ascend in their balloon while Rigby descends in his diving bell. The Borgheses quickly discover the wreck of the Arianna and guide the Batavia Queen and the submerged Rigby to it. Immediately afterwards, the motor driving the propeller that allows them to steer their balloon fails and they careen helplessly over Krakatoa and into its active crater. They jettison the useless engine and propeller into the crater's lava lake to reduce weight and finally are blown clear of the crater by a volcanic explosion which sets their balloon afire. They drift away from the island, leap into the sea, and are rescued, but the fire destroys the balloon. Danzig tells Hanson of Connerly's lung problems, and Hanson decides that he will dive on the Arianna instead of Connerly. While Connerly and Hanson argue over this, Rigby's diving bell becomes snagged on coral. The pearl divers, Hanson, and Connerly all dive into the water to free Rigby, and while they and the Batavia Queens other passengers and crew are thus occupied, Danzig steals a pistol he finds in the ship's chart room, knocks the jailer unconscious, and frees the prisoners. They take over the ship, throw the unconscious jailer overboard to drown, and imprison the passengers and crew in the hold, where they also place Rigby and the pearl divers when they return to the Batavia Queen. Before returning, and unaware of the turn of events aboard the Batavia Queen, Hanson and Connerly swim to the wreck of the Arianna, find the ship's safe, and attach a cable to it to have it hoisted aboard the Batavia Queen. Upon their return, Danzig has Connerly lowered into the hold but forces Hanson to look on at gunpoint as he opens the Ariannas safe on the Batavia Queens deck. They find nothing in the safe but a cheap pocket watch. When an explosion on Krakatoa distracts Danzig, Hanson overpowers him, takes the pistol from him, pushes the heavy safe over onto one convict, shoots two others, and uses steam from a hose to force the rest of the prisoners to jump