The Elsewhere Prince

Okay, so, there’s a spaceship/base/asteroid thing, which keeps a lot of different worlds in place. Still with me? This was created by Major Grubert. Why though, I cannot answer. Now follow me down to one of these worlds. Picture yourself in a baking desert with a tree. In this tree there is an artist, who is trying to sketch a beast that looks rather like a rhino. He will follow a group of mercenaries and meet a princess, an archer, monstrous creatures and evil kings. Will you join him?