If we're talking about a life-or-death struggle, I'd cover the main vital strike points of the body.
With emphasis that the associated attacks are only for survival.
Run through some common grabs, and the defenses for them.
Discuss local laws regarding self defense, appropriate force, legal weapons, etc.
Still, one week is a hell of a time-crunch.
In my walk in the martial way, my hope is that as long as I live, I will always be a beginner.