Dazed by the unrelenting digital demolition on screen, thoughts go through your head like: 'Can this movie literally crush me?' 'Is death by Dolby possible?' and 'You know, it's really time to get the car washed.' The fifth in the franchise and second in the "Wahlberg Years" (Mark Wahlberg replaced Shia LaBeouf as lead in the last installment), "The Last Knight" continues the Hasbro toy adaptations and expands further into the alien machines' mythology. The script by Art Marcum, Matt Holloway and Ken Nolan ropes in a backstory involving Arthurian legend, suggesting the magic of Merlin was nothing but Transformer technology. There are crucial objects — Merlin's staff, a talisman that attaches itself to Wahlberg's Autobot-defending Cade Yeager — that bring constantly arriving Transformers, plummeting in space ships from the sky, and eventually, the vengeful leader of their home planet, Cybertron. There is, for a moment, a touch of metaphor for immigrant empathy in their unfortunate status, but it quickly gets buried in the mounting debris. There's also an Oxford scholar (Laura Haddock) skeptical of Round Table legend, and, briefly, an elite scientist (Tony Hale) whose insistence on solving intergalactic problems with silly things like physics is, here, a joke. The Last Knight, a Paramount Pictures release, is rated PG-13 by the Motion Picture Association of America for intense sequences of sci-fi action violence, brief sexual humor and language.