The aliens came with a promise of peace and an offer for mankind to join the Galactic Community. People around the world were eager to meet our new friends. One favor was asked by the aliens. They brought a device to Earth which revealed the true heart of all who entered; you became what you really are.
The evil were guarded to protect all involved: human and alien. Norbert knew he had nothing to worry about. He had a good heart. He stepped into the machine. It did what is always does; turns the person inside into who they really are.
Helen stepped out of the machine, the person she really was inside. Norbert knew his deepest inner thoughts could cause the transformation. Helen was okay with it. It felt good to finally be the person she really is. The aliens really did come in peace.