Transformers 5 (2017) Ending Explained

Theo Montage Profile Image
By Theo Montage
July 07, 2025

TL;DR:
The ending of Transformers: The Last Knight (2017) revolves around Optimus Prime's redemption, the defeat of the ancient Cybertronian villain Quintessa, and the restoration of Earth as a hidden Cybertronian artifact. After being brainwashed by Quintessa, Optimus turns against humanity but is ultimately freed by Bumblebee's intervention. The Autobots and their human allies, including Cade Yeager (Mark Wahlberg), unite to stop Quintessa from using Earth's core to revive Cybertron. The film concludes with Optimus rallying the remaining Autobots to seek out other Transformers across the universe, setting up future conflicts. The ending is action-packed but leaves several unresolved questions about Cybertron's future and Earth's role in the Transformers' war.

Detailed Explanation of the Ending

The climax of Transformers: The Last Knight is a chaotic, high-stakes battle between the Autobots, Decepticons, and the ancient sorceress Quintessa, who seeks to drain Earth's energy to revive Cybertron. Optimus Prime, previously corrupted by Quintessa and turned into "Nemesis Prime," is confronted by Bumblebee, who ultimately helps him break free from her control. This emotional moment is pivotal, as Optimus finally realizes Quintessa's deception and rejoins the fight against her. Meanwhile, Cade Yeager, Sir Edmund Burton (Anthony Hopkins), and the remaining human allies work to prevent Earth from being destroyed by the extraction process. The final battle culminates in Quintessa's apparent defeat, though her fate remains ambiguous, and Earth is saved from destruction.

Unresolved Questions & Possible Answers

  1. What is Quintessa's ultimate fate?
    • Possible Answer: While she appears to be defeated, her survival is likely, given her power and the franchise's tendency to bring back villains.
  2. What happens to Cybertron now that Earth's core is no longer being drained?
    • Possible Answer: Cybertron remains in a weakened state, setting up future conflicts over its restoration in sequels.
  3. Why did the Transformers' creators choose Earth as a key to their survival?
    • Possible Answer: Earth may have been a hidden forge or energy source predating human civilization, as hinted by ancient artifacts in the film.
  4. Will Optimus Prime's call to other Transformers lead to new alliances or conflicts?
    • Possible Answer: This could introduce new factions, such as the Maximals (Transformers: Rise of the Beasts later explored this).

Personal Opinion on the Ending & Film

While Transformers: The Last Knight delivers the franchise's signature spectacle-massive battles, stunning CGI, and explosive set pieces-the ending feels rushed and overly convoluted. The emotional beats, such as Bumblebee's reunion with Optimus, are effective but undercut by the film's messy pacing and overstuffed plot. The decision to tie Earth's history directly into Cybertronian mythology is ambitious but not fully explored, leaving many narrative threads unresolved. The film's conclusion, while setting up future installments, feels more like a franchise checkpoint than a satisfying resolution. Despite its flaws, fans of the series may appreciate the grand scale and lore expansion, but casual viewers might find it overwhelming.

Final Thoughts & Future Implications

The ending of Transformers 5 leaves the door open for sequels, particularly with Optimus Prime's declaration that he will search the universe for more Transformers. This suggests future films could explore new worlds, factions, and conflicts beyond Earth. However, the movie's poor reception likely influenced the franchise's subsequent shift toward reboots (Bumblebee, Rise of the Beasts) rather than direct continuations. The film's attempt to deepen Transformers lore was commendable but ultimately suffered from weak execution. If viewed purely as a popcorn blockbuster, it delivers on action, but as a narrative, it struggles to balance its mythological ambitions with coherent storytelling.

Would you like a deeper analysis on any specific aspect of the ending?