Manny, Sid, and Diego's Adventures of John Carter is the first and only Ice Age/Disney crossover film planned to be created by JohnPrice46500. It will be shown on YouTube and Vimeo in the near future.
After the sudden death of John Carter (Taylor Kitsch), a former American Civil War Confederate Army captain, Carter's nephew, Edgar Rice Burroughs (Daryl Sabara), attends the funeral. As per Manny, Sid, Diego, and Carter's instructions, the body is put in a tomb that can be unlocked only from the inside. His attorney hands over Carter and Peaches's personal journals for Burroughs to read, in the hope of finding clues explaining Carter's cause of death. Meanwhile, the mysterious Therns are secretly keeping watch on Burroughs' goal.
The anecdote recounts back to the Arizona Territory, where Union Colonel Powell (Bryan Cranston) arrests The Herd and Carter. Powell, knowing about Manny and Carter's military background, seeks their help in fighting the Apache. the herd and Carter escapes their holding cell, but is pursued by Powell and their cavalry. After a run-in with a band of Apaches, the Herd, Carter and a wounded Powell are chased until they take to hiding in a cave that turns out to be the object of Manny, Sid, Diego and Carter's earlier searching, the "Spider Cave of Gold". A Thern appears in the cave at that moment; Carter kills him Sid accidentally activates the Thern's powerful medallion, leaving Sid's granny in the cave, and is unwittingly transported (including Scrat) to a ruined and dying planet, Barsoom (Mars). Because of their different bone density and the planet's low gravity, the Herd and Carter is able to jump high and perform feats of incredible strength, Crash and Eddie have different skins of Barsoom as Tharks while still in their Possums forms. They are captured by the Green Martian clan, the Tharks and their Jeddak (chieftan) Tars Tarkas (Willem Dafoe). Tars instructs Sola (Samantha Morton) to watch over the Herd and Carter which results in her feeding Peaches a liquid that enables them to understand the Martian language, meanwhile Scrat tries to bury his acorn but transported away in Barsoom (Mars).
Elsewhere on Barsoom, the Red Martian city of Helium led by Tardos Mors (Ciarán Hinds) and the mobile scavenger city of Zodanga led by Sab Than (Dominic West) have been at war for a thousand years. Sab Than is armed with a special weapon obtained from Matai Shang (Mark Strong), the leader of the Therns. He proposes cease-fire and an end to the war by marrying the Princess of Helium Dejah Thoris (Lynn Collins). Disguised as a soldier, the Princess escapes in a Helium ship.
When Tarkus wants Manny, Sid, Diego, Shira, Crash and Eddie, Peaches, Ellie, the Sub-Zero gang and John Carter to show off their jumping abilities, a Thark states the sightings of one ship from Helium and one ship from Zodanga scattering the Tharks to their hiding place. The Herd and John Carter takes action and saves Dejah from falling. He does manage to kill some Zodanga soldiers and have a brief fight with Sab Than. Following the fight, which leads to Sab Than's ship retreating, the Herd and John Carter is hailed as Dotar Sojat (which roughly translates to "My Right Arms") by Tars Tarkas due to their strength and skill. Tarkus even has Dejah given to them as part of the Thark spoils. Sometime after that, the Herd and Carter, accompanied by Dejah, tries to find a way to get back to earth, and stumbles upon a temple ruin sacred to the Tharks where Sola encounters them and tries to stop them from entering, but fails. After discovering that an inscription stating a way back to Earth in the sacred river of Iss, Carter, Manny, Sid, Diego, Ellie, Peaches, Shira, Crash and Eddie, Louis, Dejah, and Sola are caught by Sokoja (Polly Walker) and Tals Hajus (Thomas Haden Church). The thirteen of them are sentenced to death due to the Thark code, but they are helped to escape by Tars Tarkas, who reveals to Mannny that Sola is his daughter. When Tals and Sokoja find the prisoners gone, Tals states that Tarkus has "betrayed them." The Herd, Carter, Dejah, Sola, and Woola (a Martian Calot - which is somewhat like a mixture of a lizard and a dog) embark on a quest to get to the end of a sacred river to find a way for Sub-Zero Adventure Group and Carter to get back home. They obtain information about the "ninth ray", a means of utilizing infinite energy and also the key to understanding how the medallion works. But they are later attacked by the Green Martian Clan of Warhoon, which were manipulated by Matai Shang to pursue them. After the attack, which is repelled by Helium forces, The Herd and Carter is injured while Sola, Dejah, Peaches, Ellie, and Shira is able to escape. Sab Than is also in the company of Tardos Mors as he mentions that Sab came alone and stated that he organized the rescue party. The demoralized Dejah grudgingly agrees to marry Sab Than as Carter is taken to Zodanga to be healed.
When Manny, Sid, Diego and Carter awakens, he is guided to Dejah's room. After the servant girls leave, Dejah, Peaches, Ellie, Crash and Eddie, Louis, Shira, and the Sub-Zero gang gives The Herd and Carter their medallion and tells them to go back to Earth. As Peaches, Ellie, Shira and Dejah leaves with Sab Than, The Herd and Carter is captured by Shang in the form of Granny Sloth. In different Zodangan forms, Shang explains to Manny, Sid, Diego, Crash and Eddie, Louis, and Carter the purpose of Therns and how they manipulate the civilizations of different planets. The Herd and Carter is able to make an escape thanks to Woola as he, The Herd and Sola go back to the Tharks requesting their help. There, they discover Tarkas has been overthrown by Tal Hajus. Tarkas, Carter, Manny, Sid, Diego, Louis, Crash and Eddie and Sola are put on trial in a Colosseum battle with two enormous vicious creatures, the four-armed Great White-Apes. After defeating them and easily killing Hajus, Carter, Manny, Sid and Diego becomes the leaders of the Tharks.
The Thark army charges on Helium and defeats the Zodangan army by killing Sab Than and Scrat tries to bury his acorn again but drops in the Colosseum and sees a doppelganger Scratte (Warhoon) and steals it, while Shang escapes. Carter marries Dejah and becomes prince of Helium. On their first night, Manny, Sid, Diego, Ellie, Peaches, Louis, Crash and Eddie, Shira and Carter decides to stay forever on Mars and throws away his medallion. Seizing this opportunity, Shang, in the form of Peaches, sends them back to Earth. Manny, Sid, Diego, Louis, Crash, John Carter and Eddie discovers Granny Sloth still alive, the Herd and Carter embarks on a long quest, looking for clues of the Therns' presence on Earth and hoping to find one of their medallions; after several years he appears to die suddenly and asks for unusual funeral arrangements — consistent with his having found a medallion, since their return to Mars would leave their Species and Earth bodies in a coma-like state. He makes Burroughs their protector, giving him clues about how to open the tomb. The film reverts to the present, where Burroughs runs back to Carter's tomb and opens it, only to find it empty. Shang, in the form of a man with a bowler hat, then appears, having followed Burroughs. But as he prepares to kill Burroughs, The Herd and Carter appears and kills Shang, killing him (only Carter shoot Shang). Manny then tells Burroughs that he never found a medallion. Instead, Sid devised a scheme to lure a Thern into revealing himself in order to get that Thern's medallion. After suggesting to Burroughs that he enjoy his life on earth and to try writing books (alluding to the fact that Burroughs is the real-life author of the "Barsoom" novels), Manny, Sid, Diego, Louis, Crash and Eddie, Sid's granny and Carter takes Shang's medallion, whispers the code, and is then transported back to Barsoom and reunites with Dejah, Ellie, Peaches and Shira.
- This will be the first and only time that they make the Ice Age crossover of a PG-13 rated film.
- Both Ice Age: Continental Drift and John Carter were released in both 2D and 3D theaters in 2012.
- Both The Wild and John Carter were made by Disney.
- Due to the real film being rated PG-13, all of its content will be removed or this film will be re-rated PG.
- This will be the final installment in the Manny, Sid, and Diego's Adventures Series.
- This will be the NTSC film (taken from Starz on Demand HD showing of the film) with NTSC bits from the Ice Age films, The Secret of NIMH 1 and 2, Horton Hears a Who!, the Kung Fu Panda films, the Open Season trilogy, The Wild, the All Dogs Go to Heaven trilogy, Hoodwinked!, Hoodwiked Too!: Hood vs. Evil, and Rio 1 and 2.