Summaries

Synopsis

Techno Cosmic Research Institute (TCRI) executive Cynthia Utrom (Maya Rudolph) sends a squad to hunt down rogue scientist Baxter Stockman (Giancarlo Esposito), who has created a Mutagenic ooze with which he intends to form his own mutant animal family, starting with a housefly.

Baxter is interrupted by Cynthia's strike force and killed in the resulting explosion, while the mutagen falls into the sewers of New York City. The mutant housefly escapes.The mutagen turns four turtle brothers-Michelangelo (Shamon Brown Jr.), Leonardo (Nicolas Cantu), Raphael (Brady Noon) and Donatello (Micah Abbey) and a rat named Splinter (Jackie Chan) into humanoid mutants, whereupon Splinter adopts the turtles. Splinter distrusts humanity-particularly after one encounter where he and the turtles were chased away by humans after Splinter took them to Times Square for their first foray into the human world-and trains his sons in the art of Ninjutsu, instructing them to only leave their sewer home to steal supplies.Over the years, the Turtles long to live with and like humans their age, much to Splinter's dismay. Splinter had taught the Turtles not to interact with humans, as he knew that humans would never accept anyone who doesn't look like them. But, regardless, the turtles were obsessed with the human world and want to live a normal life like other humans.

Leonardo is the leader of the group, but the other turtles done take him seriously and tend to ignore his advice to stay conservative and not take unnecessary risks by exposing themselves.

Fifteen years later, the Turtles were practicing on a rooftop when they hit a person on the street with their Ninja Star. Fortunately, the star hit her helmet, and while she argued with the turtles, her scooter is stolen. The turtles decide to help her as this was their fault.They follow the scooter to a warehouse and defeat a gang of criminals to recover a stolen moped belonging to a teenager named April O'Neil (Ayo Edebiri). This was the first instance that the turtles got into a fight and gained some confidence in their abilities.The turtles reveal themselves and their origins to April. April, an aspiring journalist struggling to move past a viral incident of vomiting on camera, has been investigating a series of robberies of TCRI technology by a criminal known as "Superfly" (Ice Cube). April says that with her articles, she can help change the public perception of the turtles.Cynthia responds to the thefts by putting tracking devices on all her equipment.

The Turtles plan to stop Superfly and, through April's reporting, win public acceptance as heroes. The turtle star by attacking hired crews who have been conducting the heists on behalf of the Superfly.They intercept a piece of stolen technology and meet Superfly under the Brooklyn Bridge, discovering that he is not only a mutant himself, but leader of a mutant gang (which includes Rocksteady (John Cena), Bebop (Seth Rogen), Wingnut (Natasia Demetriou), Ray Fillet (Austin Post), Leatherhead (Rose Byrne), Genghis Frog (Hannibal Buress), Mondo Gecko (Paul Rudd) and Scumbug). Ecstatic to meet fellow mutants, the Turtles bond with Superfly and the others and he reveals their creation at the hands of Stockman, explaining that they evaded TCRI and are living on an abandoned ship in Staten Island.He then reveals that he plans to use the stolen technology to mutate every animal on Earth and create a world where mutants have dominance over humans. The Superfly plans to use to his own blood to create a weapons version of the ooze and launch it into the atmosphere. In his plan, the humans would becomes pets or source of fuel for the mutants.

The Turtles try to intervene, but the gang escapes with the equipment while a tracker TCRI installed on the equipment falls back with the Turtles, allowing them to be captured. At TCRI headquarters, Cynthia extracts the Turtles' mutagen, but April arrives with Splinter to rescue them. Cynthia wanted to use the turtle DNA to create a Mutagen that would allow her to create an army of super soldiers with hybrid human animal characteristics like with Dolphins, Eagles and Snakes.

Splinter and the turtles head to Superfly's hideout to stop his machine.At the gang's hideout, Splinter and the Turtles convince Superfly and the gang that their plan for domination will make them no better than the worst of humanity, and together they turn on Superfly, destroying his machine.However, the ooze falls into the water, combining marine wildlife with Superfly, who then transforms into a gigantic whale-like Kaiju after grabbing animals from a nearby zoo. He attacks the city, and the Turtles and other mutants attempt to stop him but are assumed by the public to be fellow monsters.

Leonardo finds his voice as a leader while April overcomes her anxiety and commandeers a news broadcast to explain the mutants' good intentions and the citizens of New York come to their aid. With the help of the citizens and other mutants, the Turtles drop a canister of TCRI retro-mutagen into Superfly's blowhole, turning him back into a collection of normal animals. Reconciling with Splinter, the Turtles, April, and the mutants are celebrated by the city. The mutants soon move into the sewers with them.

Splinter and Scumbug fall in love and the Turtles enroll at April's high school, where they are all embraced as heroes. While the Turtles and April enjoy themselves at prom, they are under surveillance from Cynthia (holding the now non-mutated Superfly captive), who plans to recapture the Turtles by enlisting the aid of the mysterious Shredder.