They first need to find the clues to the whereabouts of the other keys. As the Grim Buccaneer continues sailing, Doctor Undergear is trying to control his machines when he falls down a trapdoor, ...

While working together to restore power to the underwater Neptune City, Jake, Cubby, Izzy, Skully, and Marina discover that Bucky has the ability to turn into a submarine. Meanwhile, Captain Hook and ...