When Melman loses his first tooth, he fears he won't be Kate's baby any more and goes on a city-wide chase to recover his tooth before Kate can replace him with a younger, cuter animal.

When Ranger Hoof invites Marty on a Junior Ranger night trot in Central Park, Marty is determined to prove he's got what it takes to do the job - but when Alex tags along for the ride, Marty learns that "what it takes' is a whole lot of teamwork.

During the Lunar New Year festival, Alex is disappointed to learn that there's no Year of the Lion. Determined to be somebody important, he sets out to become the star of the festival by taking on the role of the Dragon - but he eventually learns that every role has importance and realises the costume that fits him best is his own fur.

Lala, who's grown into a froglet, is ready to finally join the gang on a big adventure in the city! But she relies on her water bowl to get around, and Gloria goes overboard in trying to protect her tiny friend in the big world… Only to realise that she underestimated all Lala is capable of doing.

When a snowstorm blocks Kate from accessing the zoo, Melman decides to become "substitute Kate" and make sure the animals are cared for. But when the animals go wild in the snow, Melman's future-paramedic skills are put to the test during an outbreak of stubbed toes and boo-boos. A series of stumbles makes Melman question whether he's cut out to be a paramedic - until he learns that mastering a goal takes grit!

When Gloria meets a shy hermit crab, named Starlene, with a secret talent of tap dancing, Gloria plans a flashy production for Starlene’s debut so she can share her talent with the world!

When Lala announces she's moving out of the habitat, Gloria feels sad. But instead of admitting it, she puts all her energy into throwing the "happiest" goodbye party for her tank mate's last day in the habitat.

When the gang goes camping in vacant part of the zoo, Melman is nervous for his first ever sleepover away from the habitat and relies on his friends to scare-proof the experience for him.

When the gang gets bored of their old toys, a mysterious treasure map appears to be the answer to their problems. But when the treasure isn't what they expected, the gang learns that you can make your own fun.

When the gang plans a habitat-wide, friendly basketball tournament, Gloria becomes overly competitive in her quest to win. After she resorts to cheating, Gloria realises that real winners are good sports, and everyone has more fun when they play fair and square.

Alex prepares an acrobatic performance which he wants to perform on Mary Sue and Todd's new live talk show! But when Ant'ney unexpectedly goes viral and is invited on the show instead, Alex is determined to outshine his friend and learns that a friend's success doesn't diminish his own.

When the gang asks him to read aloud their new favourite mystery book, Marty is too embarrassed to admit that he hasn't yet mastered reading. Marty obsesses so hard on his reading practice that he gets locked inside the library overnight with one of the library's therapy dogs, leaving the pair to team up and bust out before sunrise.

During the holidays in the habitat, Melman’s determined to add one more sticker to his yearly “nice” list.