Note: behemoth means huge thing so the title of this movie is “giant huge thing”.
Setup: radiation. This guy claims “our faces masked with lead” but I’m pretty sure you can’t see through lead.
Prehistoric sea monster somehow gets radioactive, kills with burning radioactive breath.
“What was it??” “Behemoth...” dies.
Have you seen the lenses from my spectacles?
For some reason I just love a monster attacking London.