Set sometime after the flashback in the second movie a kid lost his favorite teddy bear, our gang goes on a wild adventure through New York City to return it to him – and in the process Marty learns that some things in life can't be found in an instruction manual.

Melman finds a lucky flower and is convinced that today will be his Best Day Ever! But when a series of unlucky events threaten to ruin his day, he's faced with the choice to drown in his sorrows or “take back the day”!

When the happy-go-lucky sea lions draw crowds away from his show, Alex decides that he needs to act like the Sea Lions. When Alex's attempts to compete with them don't bring back the crowds, he learns to be true to himself rather than try to be someone he's not (i.e. fish gotta swim, birds gotta fly, and lions gotta roar… and do backflips on land).

When Gloria sneaks into the NY Ballet to audition for "Swan Lake" and gets rejected (not for her dancing, but because she's a hippo), Gloria's belief in herself is tested. With some help from her friends, Gloria learns that she doesn't need someone else to decide she's a prima hipporina – she already is one, no matter what anyone thinks!

The gang heads to "Best Fans Day" at NY's Giraffe Stadium, where Alex gets caught up in the attention of rooting for the winning team. When his behavior ends up hurting Marty's feelings, Alex comes to learn that the only team that matters is the one that's made up of his friends.

The gang heads to the Museum of Dinosaurs to help Kate with a big presentation. But Gloria becomes so obsessed with her handheld video game that she misses out on what's right in front of her, and ends up creating a disaster of colossal size!

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 rather than judge them on false stereotypes.

Alex is mistaken for a Maine Coon and takes over its life in the penthouse; despite being very comfortable at first with his fancy-schmancy new life, Alex begins to miss his old life and learns that it's lonely at the top.

On Junior Marshals' Day at the fire station, Melman gets stuck in a fire truck on its way to a real emergency; with Alex's help, Melman must overcome his fear of heights to help save a stuck cat and learn that even heroes get scared sometimes.

When Marty accidentally steals a pair of slippers from a department store, he plans an elaborate heist to return them; in doing so, he learns that in the end, owning up to one's mistakes is easier than trying to cover them up.

When a litter of hedgehogs is temporarily relocated to the habitat, Alex, Marty, Melman and Gloria become their babysitters; the mischievous hedgies quickly wreak total havoc in the habitat.

Everyone has something amazing planned for Kate's birthday, but Melman's worried that his homemade gift won't measure up; while on a quest to get Kate her favorite cupcakes, Melman learns the gift doesn't matter as long as it comes from the heart.

Gloria becomes determined to earn her Queen of Kindness Kidizen badge and welcomes some free-spirited rats who need a place to stay into the habitat before learning that it's okay to say no.

Alex heads to a Coney Island roller coaster and proves there are advantages to being small.

Marty gets jealous when Lucia the sloth arrives but then must keep her from leaving the habitat.

Melman misses his bedtime to watch the ball drop on New Year's Eve with his friends and have fun.

When a tadpole named Lala shows up in Gloria's tank, Gloria must learn to manage different friendships.

Gloria tries to make spring come early so that she can get the missing tail for her mermaid doll, but learns to embrace other plans.

Marty tries to figure out which float their new friend Odee Eliot should ride in the Animal Pride Parade.

Alex lands a role in a big Hollywood movie with his idol Harley Horns (Eric Stonestreet), but his idol is not who he seems.

When Melman loses his first tooth, he goes into the city to find it so he can get his present from the tooth fairy.

Ranger Hoof invites Marty on a Junior Ranger trot, and he's determined to prove he has what it takes.

Alex tries to become a star of the lunar new year show as a dragon.

After growing legs, Lala is ready to go on a big adventure with her friends; Lala meets a shark named Oggie (Michael Leon Wooley) and tries to help him get out of a net.

When a snowstorm blocks Kate from accessing the zoo, Melman tries to fill in for her.

Gloria meets Starlene (Alanis Morissette), a shy hermit crab with a big talent; Gloria tries to help her show off her amazing talent to the animals of NYC.