: In the present, Optimus Prime returns to a dead Cybertron where his creator, Quintessa , brainwashes him into becoming "Nemesis Prime". She tasks him with retrieving Merlin’s staff to drain Earth’s (Unicron's) energy to restore Cybertron.

This brings us to the final part of the keyword: "2021." For a film that premiered in 2017, why would a specific WEB-DL be tied to this year?

Around 2021, streaming platforms underwent massive infrastructure upgrades to support high-bitrate 4K, Dolby Vision, and HDR10+. The Last Knight was originally filmed using a complex mix of IMAX 3D cameras, anamorphic lenses, and RED 8K cameras. Because Michael Bay constantly shifted aspect ratios to maximize the scale of the robot battles, early home video releases sometimes struggled with color consistency and compression artifacts.