The Return of the Revenge of Dr. Blowhole.Alone on a secret mission in Shanghai, Skipper walks into a trap set by Hans and Dr. Blowhole which results in Skipper's memories being taken from him by Blowhole's "mind jacker" device before he falls into the ocean. Blowhole plans to use the mind-jacked information to aid in assaulting the penguins' HQ. Later, Skipper washes up on an island, confused about where he is and how he got there. To aid in helping him regain his memory, Skipper's mind hallucinates a "spirit guide" for him to follow in the form of Alex, a lion who had once been a Central Park Zoo neighbor. With "Alex" accompanying him, Skipper sets out to return to New York. Meanwhile, Blowhole has unveiled his Diaboligizer invention to his lobster minion Red One, a device which transforms those hit by its ray into evil creatures of destruction. Blowhole plans to use the Diaboligizer on Kowalski, Rico, and Private, and heads to Manhattan to carry out his plan. He enters the penguins' HQ at the same time Julien and Mort are attempting to pilfer Kowalski's experimental power cell, which Julien wishes to use to replace the dead battery in his MP3 player. With the power cell inside, the Diaboligizer's ray hits it instead of the penguins, resulting in the device increasing in size, floating in the air, and creating an energy bubble which causes the whole zoo to speak only through song. Blowhole manages to exploit this development by singing to tame the mutant MP3 player in order to take control of it and then leaves the zoo with it to unleash his wrath against the city. Skipper then returns and the penguins and lemurs then set out to stop Blowhole, which is accomplished when Skipper's singing serves as a distraction so that the power cell can be removed from the MP3 player. Skipper then activates Blowhole's mind jacker on him and Blowhole returns to Coney Island to perform as "Flippy".