Act as an expert Narrative Designer. Outline a story structure featuring three distinct timelines: The Past (Medieval era), The Present (Modern day), and The Future (Cyberpunk era). The narratives must converge in a single climax event. The story must explore the theme of 'Sacrifice for Knowledge'. For each timeline, describe the protagonist, the inciting incident, and the midpoint twist. Finally, explain how the specific actions in the Past and Future timelines directly cause the possibility of the Present timeline's climax.