[sorry for bold; force of habit]

...their brains suddenly began to work, allowing a large collective of suburbanites to create a new breed of fusion bomb. So armed, ...

..."The Suburbanites" formed a cohesive plan for world domination. They would...

... first establish a supersecret underground base in an uninhabited island in the Pacific. Unfortunately, the construction of the base triggered the long dormant volcano into activity, causing ...

...an entire volcanic chain to erupt as the Pacific and Nazca tectonic plates pulled apart. Enough ash was thrown into the atmosphere to cast the whole Earth into darkness...

...leaving the way open for moles to establish dominance over humans. The moles forced humans into slavery, digging vast networks of tunnels underground, until the stability of the Earth's crust was reduced so much that the whole surface of the earth collapsed inwards...