Dark Government

The planet is covertly invaded by several species of beings, recouping the seeds of its life planted here hundreds of thousands of years ago, deep within the split brain (two hemispheres) people.
Covertly they move into the secretive side of the government, no one on the outside ever sees them or knows much about them. Their power comes from nurturing the singl brain attribute, found to be a defect, but in fact is one of their qualities and requirements for development.
Peace among these invaders is questioned, as each tries to use its power to take over the planet, with the help of the Dark Government.