Final Fantasy II
Walkthrough · Chapter 4 of 6 · Self-contained

Reclaiming Fynn

Take the capital back, then chase the white mages’ trail through tropics and crystal caves toward Mysidia.

Hub Ch.1 Ch.2 Ch.3 Ch.4 Ch.5 Ch.6
Chapter goals

Chapter 4 checklist

  • Assault and clear Fynn Castle
  • Defeat garrison boss (Gottos / Imperial commander as named)
  • Restore rebel HQ functions in Fynn; new shops
  • Tropical Island mission (mask / black magic orb path as directed)
  • Cave of Mysidia full clear; obtain passage toward Tower of Mysidia
  • Stock for tower: high Cure ranks, status cures, weapon ranks mid-high
  • Tower of Mysidia / Ultima / Cyclone (Ch.5)
Set-piece

Liberation of Fynn

  1. With Dragoon aid and airship logistics in place, Hilda orders the reclaiming of Fynn.
  2. Enter the occupied castle. Multi-floor Imperial stronghold.
  3. Open every chest — late-mid armor and tomes hide here.
  4. Fight elite soldiers; use Blink/Protect if your White magic has them.
  5. Throne / keep boss: hard physical Imperial. Berserk + Haste on Firion/Ricard, Cure every turn he double-hits.
  6. Victory cutscene: Fynn is free. Shops and story NPCs relocate / expand.
Re-shop in Fynn. Buy the best weapons of your chosen types. This is a major gear checkpoint before Mysidia’s undead-heavy caves.
Story

What the rebellion needs next

  1. Talk to Hilda, Minwu (if still present), and advisors in liberated Fynn / Altair.
  2. Learn about Mysidia, Ultima, and the Empire’s next superweapon threats.
  3. Memorize new keywords (town names, spell names, passcodes) and Ask around both cities.
  4. Guest roster may shift (Leila the pirate captain often appears around ship missions — equip her if she joins).
Side continent

Tropical Island

  1. Sail or fly to the Tropical Island as marked for the Black Mage / orb / mask questline.
  2. Dungeon is jungle-themed with strong randoms. Bring Antidotes and high HP.
  3. Retrieve the required key item (Black Mask / crystal / idol depending on exact PR labeling).
  4. This item typically opens or advances the Cave of Mysidia / tower approach.
Dungeon

Cave of Mysidia

  1. Enter the cave that guards the approach to Mysidia’s tower.
  2. Heavy undead and spellcasters. Fire and Dia-style damage (if you have white offensive spells) help; otherwise raw ranks carry.
  3. Full chest clear — some of the best midgame accessories live here.
  4. Boss / seal guardian at the end if present; then emerge near the path to the Tower of Mysidia.
  5. Save; restock in Fynn before Chapter 5’s tower run.
Ultima prep: The tower will demand Minwu’s sacrifice to break the Ultima seal. Strip Minwu completely before that cutscene in Ch.5 if he is still in the party.
← Chapter 3 Chapter 5: Mysidia →