Complex sentence: Over the course of the story, we follow Edwin as the explores his universe and the various secrets and mysteries it holds, including a woman other than Mother who serves as his "teacher" but is actually just his mother in disguise.
Split into simpler sentences: Over the course of the story, Edwin explores his universe and various secrets and mysteries it holds. Among them is a woman other than Mother who serves as his "teacher," who is actually his mother in disguise.