With his friends pursuing their own dreams, Alex feels like he's being left behind; when he goes on an epic adventure of his own -- a trip to space -- Alex learns that even though life changes, the bonds of friendship don't have to.
The gang gets their paws on some CRITTER CARDS, NYC's latest toy craze, and Gloria is determined to collect them all. But when Gloria loses Melman's rare and special card, the gang goes on an adventure in the city to get it back.
When Rocky asks Alex if he'll direct his original musical, "RATS," Alex accepts despite having no experience; when the show devolves into disaster, Alex realises he should've told Rocky he was a newbie at directing.
After hearing spooky rumors about the new habitat resident- A BAT- Marty is determined to protect his friends from the newcomer. But when the bat helps him out of a tough situation, Marty learns it's better to get to know someone before judging them.
Alex, Gloria, Marty, Melman, Ant'ney, Gino and Gina head to a baseball game to see their favourite team play. But it is not an easy adventure for a bunch of zoo animals to get in to a stadium with full of people.