<P> All Hail King Julien is an American computer - animated comedy web television series . It stars characters from the DreamWorks Animation animated film Madagascar . It stars the main three lemurs; King Julien, Mort and Maurice from the Madagascar franchise and takes place in Madagascar before the events of the first film making it a prequel . It is the second DreamWorks show to be based on the Madagascar franchise . </P> <P> The series debuted on December 19, 2014, on Netflix when the first five 22 - minute episodes were released . Season 2 was released on October 16, 2015 . Season 3 was released on June 17, 2016, and season 4 was released on November 11, 2016 . The Exiled Season was released on May 12, 2017 . The fifth and final was released on December 1, 2017 . </P> <P> When King Julien XII (also known as Uncle King Julien), a very strict and cowardly ring - tailed lemur is foretold to be eaten by fossa (spelled and pronounced as "foosa"), he abdicates his throne in favor of his nephew, who becomes King Julien XIII, a selfish, notorious party animal, who now has an entire kingdom of lemurs to lead on his own . While Uncle King Julien is gone, the new King Julien gets into various troubles in the company of his adviser Maurice, his head of security Clover, Mort, and his brother Frank "the Sky God". All the while, his devious uncle returns and tries to get rid of his nephew to reclaim the throne . Aside from Uncle King Julien and the foosa, Julien deals with other threats like the mad fanaloka Karl, and Clover's twin sister Crimson . </P> <P> At the end of the fourth season, King Julien is dethroned and forced into exile by Koto and his army but successfully defeats Koto and regained his kingdom in Exiled series . The fifth and final season takes place after Koto's demise; villains such as Karl and Uncle King Julien decide to give up their evil ways and start a new life . This all leads up to the arrival of Alex on Madagascar (marking the beginning of the original Madagascar feature film) just as Clover leaves with her husband, Sage Moondancer, on their honeymoon . </P>

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