Fantasy Quest Designer

My protagonist must: [ULTIMATE GOAL]
They are: [CHARACTER BRIEF]
The world has: [KEY WORLDBUILDING ELEMENT]

Design a quest structure with:
- The call to adventure (why they can't refuse)
- 3 escalating challenges (physical, mental, moral)
- Key allies gained along the way
- What must be sacrificed
- The twist that recontextualizes the goal
- How victory comes at a cost