When a archeology student learns his mentor has been killed after he discovered the garden of eden he must stop an eccentric billionaire from turning the tree of knowledge into a drug for the wealthy.

Why?

Why must he stop the rich from getting hooked on a drug?

I suggest?you brush up on the Genesis 3. ?Eating the fruit from the tree of the knowledge of good & evil ?was the bite banishment, sorrow and death ?for Adam & Eve. ?Eating from the tree of life was the what granted eternal life (Genesis 3:22).

This sounds like a very interesting concept. However, the one thing it lacks is a true reason for the story. It gives no reason for why this student would try to stop this billionaire. Does he want it for himself? How does he even have the means to stop the billionaire?
One other thing, the fact that he is an archaeology student seems to add nothing to this logline, so I suggest you take it out.