Half-Shell Heroes: Blast to the Past

The film starts with the Turtles in the Party Wagon chasing after the van that Tiger Claw, Bebop and Rocksteady in there. Inside of the Party Wagon, Leonardo and Raphael are seen in the front while Donatello and Michelangelo in the back. Donnie explains that according to the GPS saying that Shredder's goons are heading to the national New York City History Museum. Meanwhile in Bebop and Rocksteady's van, Tiger Claw is creating a plan to steal the Cronite. As the three mutants arrive to the museum. The Turtles are there too and Michelangelo is amazed by all those dinosaur bones, just as three mutants arrive. Tiger Claw, Bebop and Rocksteady found the Cronite. Mikey accidentally touches the bones of the dinosaur, which crumbles to the ground, making enough sound to drive attention to Tiger Claw, Bebop and Rocksteady, the Turtles then start their fight. Leo fights with Tiger Claw, Donnie and Raph fight with Bebop, and Mikey fights with Rocksteady. While fighting, the Turtles were able to steal the Cronite as they escape the museum, leaving the mutants empty-handed. The Turtles return to the lair, Working on his lab, Donnie finds out that Cronite is more powerful than the Kraang crystals. His brothers arrived in the left and see the giant figure covered in the sheet. Don uncovers the sheet revealing the Shellformer: it can fly, riding on Earth and transform into Giant Turtle Mech, much to Mikey's joy. When Donnie is about to insert the cronite to the tank, Leo declines, saying that they have to return the cronite back to the museum. Raph and Donnie ask Leo to reconsider, saying that if they return it back to the museum, then the Shredder's goons will steal it again. In New York City, the Turtles have aboard the Shellformer. Leo starts rejecting the idea saying that it is the most horrible idea but Donnie informs his brothers that if he'll be annoyed by them, he'll push the eject button. Unbeknownst to them Bebop and Rocksteady are watching them. The Shellformer starts to fly (after Raph asks Don to make it fly), Bebop and Rocksteady jump right at the vehicle just as Donnie forcefully turns all the levers as the ship starts to fly with warp speed. Just as it seems it can't be stopped, the Shellformer flies right at the T.C.R.I. building, but it disappears in one second... ...then reappearing in the wormhole as it enters the portal, with the Turtles, Bebop and Rocksteady. The mutants along with the vehicle have been sent back in time, the Cretaceous period, where dinosaurs are still living. After Donnie succeeds to maneuver the volcanos, this maneuver causes Bebop and Rocksteady to lose their grip as they fall right at the mount, knocking them out unconscious, just as the Shellformer crashes to the ground. The Turtles exit the Shellformer, with Donnie explains to his brothers that they are in Cretaceous period millions of years back into the past! Don thinks that it is because of Cronite, believing that when it burned off, it created wormhole and it transported them here. Meanwhile, Bebop and Rocksteady wake up, only to find out that they're in Cretaceous period, the Pteranodon appears and screeches at them before they cowardly escape it. Suddenly, one little dinosaur snatches one of Raph's sai, and Raphael runs after it. The dinosaur disappears into a log, then it mysteriously appears in a tree and throws down the sai beneath one of Raph's feet. Raph picks up his weapon as his brothers tease him about how he was outsmarted by "chickenosaur". Raphael gets so angry that he explodes at his brothers in rage. Suddenly, one unknown dinosaur appears from the bushes. When Mikey goes to pat it, the dinosaur suddenly snaps at him menacingly. Believing that dinosaur is hostile towards him, Mikey attempts to warm up to it. As the dinosaur reveals himself from the shadows, it is revealed to be raptor just as his species arrive and attack. The Turtles try to run away from the Tyrannosaurus rex!, but he is faster. They try to fight him but he appears to be more skillful and stronger for a dinosaur. The Turtles try to hide in the log, but the same white dinosaur (that stole Raphael's sai) appears and screeches, giving attention to T-Rex, who grabs the log with his menacing teeth and when he throws it up to the air, he smacks the log with his tail, as it flies right towards the cliff as it becomes smashed as the Turtles fall. The other three Turtles arrive in the Shellformer and escape T-Rex. When the Turtles ask about Raph's whereabouts, Mikey thinks that he's already in the Pteranodon's belly, slowly digesting into dino poop. When Donnie asks Mikey if he always have to say gross things, Mike says, "Absolutely," much to Leo's and Don's annoyance and disgust. Meanwhile, Raph seems to be exasperated and has enough. He bites the Pteranodon's feet and starts attacking her. As she flies around out of control, she and Raph hit the tree as both fall to the ground. Raph escapes the Pteranodon's grasp and tries to fight her, only to learn that he accidentally slashed one of the Pteranodon's feet after their bumping into the tree. Raph fixes her wing with his appendages. The Pteranodon thankfully screeches at Raph and flies off. Raph smiles at her and then goes to find his brothers. Meanwhile, Bebop and Rocksteady have new clothes and upgrade. When they decide to find the Turtles, they have been confronted by strange shadows with blasters as they take the two mutants hostage. The Turtles quickly escaped two T-Rexes and aboard the Shellformer, and when Mikey excitedly pushes the button, the Shellformer transforms into giant robot transformer, and the Turtles use it as a weapon to fight the two T-Rexes. Despite T-Rexes' own strength and speed, the turtle robot was able to defeat them. After defeating the final T-Rex, Mikey feels sorry for him, saying that he wanted hugs, only for Raph to agitatedly remark that he wants them in his belly. Just as they were about to go back to the future, they realize that the fuel is gone and the Cronite is destroyed, since they have used so much energy to fight T-Rexes. With this, the Turtles are stuck in the past! When the Turtles start to lament their fate, there's a thunderous earthquake. When the Turtles head to investigate, they see the giant perimeter base. As they look around, they see that this is the Triceratons base, and their enemies have captured and enslaved the several dinosaurs. As they have thinking for the plan, the Turtles need to cover themselves in the shadows just as they always do. The Turtles then see the crystals, which Donnie gets an idea that they can use them to go home. Noticing the Turtles as intruders, the Triceratons attack the Turtles and defeat them with their own brute strength. The Turtles try to escape, but the Triceratons unleashed the Robo Raptors. The Turtles then see the cliff and they are surrounded. The Turtles then try to fight them but the robotic dinosaurs have defeated them. Just as it seems that the hope is lost, the dinosaurs, whom they have encountered earlier, appear and battle the robotic raptors, sending them fleeing. Raph says that this is going to be in his list of the best actions of his life. Meanwhile, Bebop and Rocksteady are thrown into the prison cell by the Triceratons, who are revealed to be the shadows who have captured them. Suddenly they have been confronted by the Triceratons once again and they encounter their leader: a female Triceraton, named General Zera. Zera declares that the Triceraton empire will rule the galaxy. The Triceratons like the idea but Bebop and Rocksteady are not. The Turtles who are accompanied by their dinosaurs while riding on them decide to go back to the Triceraton base and get some a few crystals to use them to go home. Now that Donnie had a T-Rex, the Turtles started to gather those they can forage and wore new clothing along with their dinosaurs, who even wore matching colored masks and knee pads like their mutant friends. After the Turtles carve new weapons to battle with, they ride their respective dinosaurs toward General Zera's base. She discovers them and orders her troops to activate the Robo Spinosaurus. A cage opens up on one of the screens, making the captive Bebop and Rocksteady shiver. The Turtles and their dinosaurs sneak past a wall before something crashes in front of them, and they dodge several flying rocks. A robo dinosaur with a saw on its back emerges, and the Turtles and their dino friends charge toward it and attempt to battle it. Eventually, the Turtles and their dinosaurs manage to defeat the Robo Spinosaurus and then charge toward and battle the Triceratons. Bebop and Rocksteady, who somehow managed to get free, were also seen fighting the Triceratons. Zera grabs them both and orders the Turtles to stop battling, which they pause in mid-fight, and adds that if they continue, she will destroy their two mutant friends. Donnie objects to Bebop and Rocksteady being their friends before asking them how they got here. Rocksteady says it's a long story, while Bebop begs them to free them and that they'll help beat these Tricerafools, before Zera bangs their heads together. She then demands the Turtles to surrender and drop their weapons, which they reluctantly do. When Zera assumes the Turtles accept defeat, their dino friends suddenly appear roaring behind Zera's back and ambush her and her Triceraton henchmen. The Turtles, the dinosaurs, and even Bebop and Rocksteady then charge toward and battle Zera and her Triceraton minions. After they kick Zera to a wall, she unleashes her Robo Raptors and demands them to kill the Turtles and their dinosaur pets. The Turtles run from the Robo Raptors, as there were too many of them to fight. Not even their dinosaur pets could fend them off. Leo asks Donnie if he can reprogram the Robo Raptors, which Donnie succeeds in doing after tampering with the control panel, with Bebop even saving Donnie from getting blasted by Zera when she notices. The Robo Raptors stop fighting the Turtles and then charge toward Zera and her Triceraton army, thinking they're food. Zera and her Triceraton race all run off in panic as the Robo Raptors chase after them hungrily. The Turtles all stand in triumph, their dinosaur pets behind them. Bebop and Rocksteady then appear and try convincing them that they also did a good job and to give them a ride back to the future. Leo says he won't leave them here, but they have to promise to turn over a new leaf. They agree, although Bebop takes the expression literally and commands a leaf on the ground to turn over. Raph then tells them to make themselves useful and grab the time stuff so they can all go home, which they do. Donnie says he can use the broken Spinosaurus parts to repair the Shellformer, but is unsure if they can travel back to the present time, though Leo tells Donnie to just step on it. Three days later, the Turtles, the dinosaurs, and Bebop and Rocksteady all stand in front of the now-finished Shellformer. Leo, Donnie, Mike, and Raph then say goodbye to their respective dino friends in their own way. Afterwards, the Turtles and Bebop and Rocksteady get inside the Shellformer. Donnie then presses a button and they speed off into thin air. Their dinosaur friends look on as they leave, with the T-Rex roaring as a final goodbye. The Shellformer lands on a building before the hatch door opens. The Turtles and Bebop and Rocksteady get out and see the city in red lights, and Donnie realizes that they're in New York in the future before they all notice a statue of Shredder in place of the Statue of Liberty. Raph says a giant statue of Shredder in the future can't be a good thing before Don suggests they check the place out for ten minutes or so. Everyone else but Leo agrees before he sighs and decides to join them, and they all run off to take down The Shedder.

• Seth Green as Leonardo
• Sean Astin as Raphael
• Greg Cipes as Michelangelo
• Rob Paulsen as Donatello and Triceraton Lieutenant
• Fred Tatasciore as Rocksteady
• J.B. Smoove as Bebop
• Kate Mulgrew as General Zera
• Eric Bauza as Tiger Claw, Triceraton Soldier # 2, Triceraton # 3, and Guard #1

Random House also released a book based on the special while Playmates released new dinosaur toys in the fall to coincide with the program.^[1] The special was seen by 1.41 million viewers.^[2] It was released on DVD, through Nickelodeon and Paramount Home Media Distribution, on March 15, 2016.^[3] The special is available to stream on Paramount+