Steam arises out of Tokyo Bay. The authorities think it may be caused by an underwater volcano but video posted on social media suggests that it may be completely different. It's only when I giant tail emerges that they are convinced it's a giant creature. The monster travels into a nearby river, trashing boats and flooding streets. When we first see what it looks like it appears to be amphibious, with gills and lidless eyes. It's also not upright yet. That soon changes when it travels onto dry land, transforming more into the familiar shape. You see, this monster is continually changing into its final form. And that final form is extremely unpleasant, like a vicious raw hunk of meat. Basically, they surmise that Godzilla developed from an aquatic creature that was exposed to radioactive waste and is not a living nuclear reactor. This gives him the ability to shoot fire-and lasers out of his mouth and spines, which his pretty cool. As he continues to destroy the city the authorities (and there are dozens of people) try to figure out how to stop him or even if they can.
This is a very different, much more realistic Godzilla movie than what has come before. I loved it when the slow, steady Godzilla perks up into attack mode and the various stages of his metamorphosis. I could have done without all the government interaction with I found boring after a while. Still, recommended.