Alex, Marty, Gloria and Melman are still trying to get back to the Big Apple and their beloved Central Park zoo, but first they need to find the penguins. When they travel to Monte Carlo, they attract the attention of Animal Control after gate crashing a party and are joined by the penguins, King Julian and Co., and the monkeys. How do a lion, zebra, hippo, giraffe, four penguins, two monkeys, three lemurs travel through Europe without attracting attention and get back to New York? They join a traveling circus. Their attempts to get back to New York are consistently hampered by the Captain of Animal Control who wants to make Alex part of her collection. Once they make it back to New York Marty, Alex, Gloria and Melman realize that they want to be part of the traveling circus.

In the town of Blithe Hollow, Norman Babcock is a boy who can speak to the dead, but no one besides his eccentric new friend, Neil, believes his ability is real. One day, Norman's estranged eccentric uncle tells him of an important annual ritual he must take up to protect the town from an curse cast by a witch it condemned centuries ago. Eventually, Norman decides to cooperate, but things don't go according to plan. Now, a magic storm of the witch threatens Blithe Hollow as the accursed dead rise. Together with unexpected new companions, Norman struggles to save his town, only to discover the horrific truth of the curse. With that insight, Norman must resolve the crisis for good as only he can.

Scrat's nutty pursuit of the cursed acorn, which he's been after since the dawn of time, has world-changing consequences - a continental cataclysm that triggers the greatest adventure of all for Manny, Diego and Sid. In the wake of these upheavals, Sid reunites with his cantankerous Granny, and the herd encounters a ragtag menagerie of seafaring pirates determined to stop them from returning home.

A clown fish named Marlin living in the Great Barrier Reef loses his son, Nemo, after he ventures into the open sea, despite his father's constant warnings about many of the ocean's dangers. Nemo is abducted by a boat and netted up and sent to a dentist's office in Sydney. So, while Marlin ventures off to try to retrieve Nemo, Marlin meets a fish named Dory, a blue tang suffering from short-term memory loss. The companions travel a great distance, encountering various dangerous sea creatures such as sharks, anglerfish and jellyfish, in order to rescue Nemo from the dentist's office, which is situated by Sydney Harbor. While the two are doing this, Nemo and the other sea animals in the dentist's fish tank plot a way to return to Sydney Harbor to live their lives free again.