The plot was a bit of a standard one - humans develop a weapon to get rid of Godzilla, something related to that weapon goes horribly wrong - but had a bit of an interesting twist to it by bringing in the prehistoric bugs.  Definitely good amounts of destruction, though, especially with the human weapon - the Dimension Tide, a miniaturized black hole.  (Of course, it was that black hole that allowed the bug to show up at all.)