In 2035, ten years after the events of
the previous film, the Jaeger Program has been reinstated and now thrives under the watchful eye of Mako Mori, currently the Senator who runs the Pan Pacific Defense Corps (PPDC). Former Jaeger pilot and Stacker Pentecost's son, Jake, ekes out a living for himself in the Relief Zones (abandoned sections of cities destroyed by past Kaiju battles), mostly by stealing and selling Jaeger parts on the
black market in
Santa Monica, California. After tracking a disabled Jaeger's power core to the secret workshop of fifteen-year-old Jaeger enthusiast Amara Namani, both are apprehended by the PPDC following an altercation between Amara's small, single-pilot Jaeger
Scrapper and the law enforcement Jaeger
November Ajax. Mako persuades Jake to return to the PPDC as an instructor to avoid prison, with Amara as his recruit. Arriving at the China Shatterdome, Jake begins training Jaeger cadets alongside his estranged former co-pilot, Nathan "Nate" Lambert. Nate and Mako explain that the Jaeger program is threatened by Shao Industries' new drone program, which offers to mass-produce Jaeger drones developed by Liwen Shao and Dr. Newton "Newt" Geiszler. Mako is due to deliver a final assessment to determine the approval of the drones at a PPDC council meeting in
Sydney. A rogue Jaeger,
Obsidian Fury, attacks the city and during an altercation between the former and Jake and Nate's Jaeger
Gipsy Avenger, Mako is killed.
Obsidian Fury escapes into the ocean before backup Jaegers can apprehend it. Mako's death prompts the PPDC council to authorize and deploy the drones immediately. Moments before her death, Mako had transmitted the location of a defunct Jaeger production facility in
Severnaya Zemlya, Siberia. Jake and Nate travel there in
Gipsy Avenger, but
Obsidian Fury destroys the complex and engages them in battle. Although
Obsidian Fury initially has the upper hand,
Gipsy Avenger manages to overpower and destroy the Jaeger's power core. Upon removing its control module, they find
Obsidian Fury not controlled by humans, but by a Kaiju's secondary brain, which testing shows was grown on Earth. When the drones reach their respective locations, they become hijacked by cloned Kaiju brains secretly mounted on board. The Kaiju-Jaeger hybrids simultaneously attack all Shatterdomes, incapacitating most of the Jaegers and inflicting heavy casualties, with Marshal Quan getting killed in the process. While attempting to sabotage the drones, Dr. Hermann Gottlieb discovers that Newt - whose mind is possessed by the Kaiju's creators, the Precursors, due to him drifting with Kaiju brains - is responsible for the attack when he commands the Kaiju-Jaeger hybrids to open multiple breaches across the Pacific Rim. Newt had also implanted the brains for both the drones and
Obsidian Fury in accordance with the Precursors' plan. Although Liwen destroys the drones, closing the breaches in the process, three Kaiju—Hakuja, Shrikethorn, and Raijin—had already emerged and reached
Tokyo. The team realizes that the Precursors' true endgame is to detonate
Mount Fuji with the Kaijus' reactive blood, which will cause every volcano lining the
Ring of Fire to erupt, releasing volcanic matter into the
atmosphere and causing an
extinction-level event. This simultaneously causes
terraformation of the planet for Precursor
colonization. The cadets are mobilized while Hermann and Liwen repair
Gipsy Avenger and three salvageable Jaegers
Bracer Phoenix,
Saber Athena and
Guardian Bravo. Hermann develops Kaiju-blood-powered rockets, which launches the team to Tokyo. Although the Jaegers initially repel the Kaiju, Newt merges them into a "Mega-Kaiju" using robotic parasites from one of Liwen's factories.
Gipsy Avenger is the sole survivor when the other three Jaegers are destroyed or heavily damaged. Jake and Amara, replacing the injured Nate, pursue the Mega-Kaiju, with Liwen aiding them by remote piloting
Scrapper and welding a rocket to
Gipsy Avenger, which sends both Jaegers into the atmosphere and free-falling back to Earth. Jake and Amara transfer to
Scrapper before
Gipsy Avenger collides into the Mega-Kaiju and kills it at the last second. Angered by the Mega-Kaiju's death, Newt attempts to initiate a backup plan but is knocked out and captured by Nate. Confronting an imprisoned Newt, who warns of the Precursors' return, Jake states that humanity is preparing to take the fight to them. ==Cast==