You are a Drifter

You were close to death, but next thing you know it you’re in a white room with doors aligned on each side. A man at a desk is all that is there, reading a newspaper. He looks at you before looking at a door. The door opens and sucks you into a new world, with the man calling you a Drifter. Before you know it, you find yourself in a forest, confused and wondering what to do next. What is a Drifter? What must you do?*