What is the story of Final Fantasy 15?

Related questions

1. Are the Final Fantasy games connected?
2. Does Nintendo own Final Fantasy?
3. Is Final Fantasy 15 a sequel?
4. How many World of Warcraft games are there?
5. Will FFXV have a sequel?
6. Who is Noctis mother?
7. Can you play Final Fantasy 15 without playing the others?
8. What is Crysta Ffxiv?
9. Is Final Fantasy 15 finished?

Tags

1. #kingdom
2. #discovers
3. #follows
4. #lucian
5. #light
6. #darkness
7. #wield
8. #empire
9. #lineage
10. #journey
11. #quest
12. #fantasy
13. #combat
14. #final
15. #powers
16. #embarks
17. #kings
18. #prince
19. #friends
20. #reclaim
21. #invaded
22. #story
23. #niflheim
24. #noctis