text: This sequel to the 2005 film Madagascar continues the adventures of Alex the Lion , Marty the Zebra , Melman the Giraffe , and Gloria the Hippo .
simplified: Madagascar : Escape 2 Africa is a 2008 sequel to the 2005 movie Madagascar about the continuing adventures of Alex the Lion , Gloria the Hippo , Marty the Zebra , and Melman the Giraffe .