A colony of ex-humans, having left Earth generations ago, are returning in gigantic dropships to destroy their former home world. Mutated by the harsh climates of their adopted planets, they have little in common with their human ancestors - and no problem blowing them away.

A colony of ex-humans, having left Earth generations ago, are returning in gigantic dropships to destroy their former home world. Mutated by the harsh climates of their adopted planets, they have little in common with their human ancestors - and no problem blowing them away.