Animal pals Alex, Marty, Melman, and Gloria are still trying to make it back to New York's Central Park Zoo. They are forced to take a detour to Europe to find the penguins and chimps who broke the bank at a Monte Carlo casino. When French animal-control officer Capitaine Chantel DuBois picks up their scent, Alex and company are forced to hide out in a traveling circus.
Skipper, Kowalski, Rico and Private join forces with undercover organization The North Wind to stop the villainous Dr. Octavius Brine from destroying the world as we know it.
After an earthquake destroys their underwater station, six researchers must navigate two miles along the dangerous, unknown depths of the ocean floor to make it to safety in a race against time.
