The king has been assassinated, and all his secrets are spilling into the open. A few will hurt the family. Some will hurt the empire, and some will threaten the galactic order. However, one that is not his own creation is so dangerous, that if revealed to the public, will destroy all of civilization in an instant.
Now the princess is next. I have been assigned to protect her and to find and stop the perpetrators from attempting another attack. However, a feeling cannot escape me. This feeling that everyone knows more than they are letting on about the kings death. Whatever this secret is, whoever these people are, they are willing to go to the extreme to protect their secret, even if it means killing a king or destroying an entire empire to do it.