Blox Fruits: How to Complete the Sky Island Secret Quest (Vault Code 3242)

The Skylands hold one of the more involved Island Secrets added in Blox Fruits Update 30. Instead of a simple fetch task, it chains together a timed invasion event, a rooftop break-in, several waves of enemies, and a keypad vault that only opens with the right four digits. The payout is worth the trip: a cash chest plus a large experience reward when you hand the quest back in.

Quick answer: Accept the quest from the Angel Guard in Skylands, wait for the “Enemies have invaded the Skyland Castle.” message, break the boarded door on the castle roof, kill every enemy inside, read the Crumpled Letter, enter 3242 on the Angelic Vault keypad, loot the chest, then return to the Angel Guard.

Where the Skylands secret quest starts

The quest giver is the Angel Guard, who stands on the upper part of the Skylands village, tucked behind a building toward the far end of the settlement. He is easy to walk past because he is not near the usual level-grinding quest board.

Fly or climb up to the Skylands, walk to the back of the upper village, and talk to the Angel Guard. Accept his task about recovering the riches of the Skylands.

Player standing in front of the Angel Guard NPC in the Skylands village to accept the secret quest — Accepting the secret quest from the Angel Guard on the upper Skylands village.

Note: Blox Fruits only tracks one active quest at a time, and picking up a new one cancels whatever you were on. Do not accept a leveling quest from another NPC while this is running, or you will have to speak to the Angel Guard again.

Wait for the castle invasion message

Nothing spawns inside the castle until the event fires. After you take the quest, the screen shows a notification reading “Enemies have invaded the Skyland Castle.” That message is your green light, and heading over before it appears just wastes time.

Stay in the Skylands and wait for the invasion notification to appear on screen.

Once it shows up, run or fly across the sky bridges connecting the small floating islands until you reach the Skyland Castle.

Break in through the castle roof

The front of the castle stays sealed. The way in is on top of the building, where a wooden door has been boarded over.

Get onto the castle roof and hit the boarded wooden door until it breaks apart, then drop through the opening.

Player character standing on the roof of the Skyland Castle looking for the boarded entrance — The entrance sits on the castle rooftop, not at ground level.

Clear the Fallen Angel Pirates and the Dark Master

Inside, enemies spawn in waves and the vault room stays locked off until the last one dies. The mobs are Sea 1 level ranges, so anyone comfortably past the Skylands grind will not struggle.

Enemy	Level	Role in the fight
Fallen Angel Pirate	150	Spawns in multiple waves around the castle interior
Dark Master	175	Tougher enemy that appears alongside the later waves

Fight through every wave inside the castle. Wide-area moves clear the rooms faster because the spawns cluster tightly in corridors.

Combat inside the Skyland Castle with an awakened ability selected in the hotbar — Waves of enemies fill the castle interior once the invasion begins.

Keep sweeping the rooms until no enemies are left. A fighting style with fast area damage, such as Sanguine Art, trims the clear time noticeably.

Sanguine Art equipped in the hotbar with its move list shown on the right side of the screen — A fighting style with strong area damage speeds up the wave clear.

Angelic Vault code: 3242

With the castle empty, the code is sitting on a table inside. Interacting with the Crumpled Letter reveals the four digits for the Angelic Vault keypad.

Read the Crumpled Letter on the table to reveal the vault code, 3242.

Walk up to the Angelic Vault, punch 3242 into the keypad, and open the door.

Grab the treasure chest inside the vault. Looting it pays out $25,000 immediately.

Hand the quest back to the Angel Guard

Clearing the castle triggers a second on-screen message: “The castle is clear! Claim your reward from the Angel Guard.” The experience payout only lands after you speak to him again, so the run is not finished at the vault.

On-screen message telling the player to claim the reward from the Angel Guard after clearing the castle — The clear message points you back to the Angel Guard for the experience reward.

Reset your character from the menu. Respawning drops you close to the Angel Guard and skips the long flight back across the sky bridges.

Talk to the Angel Guard and turn in the quest. The experience is credited on the spot, and the secret counts as complete for the island.

Rewards and how they fit into Island Secrets

Update 30 spread 40 Island Secrets across the 16 islands of Sea 1. Each one you finish awards a star, and the experience they hand out can push you past the normal level cap, up to level 3000. Collect all three secrets on an island and it becomes a teleport destination through the new teleporter in Middle Town; collect all 40 stars and the teleporter itself unlocks.

Reward	Where it comes from
$25,000	Chest inside the Angelic Vault
Experience (scales with your level; a level 2,844 run paid out 880,522,847)	Turning the quest in to the Angel Guard
One Island Secret star	Completing the objective
Skylands teleport unlock	Finishing all three Skylands secrets

Why the quest fails to trigger

You went to the castle before the “Enemies have invaded the Skyland Castle.” message appeared, so nothing spawned inside.
You accepted a different quest partway through, which cancels the active one.
Enemies are still alive somewhere in the castle, so the clear message never fires.
You looted the vault but never went back to the Angel Guard, which leaves the experience reward unclaimed.
You left the server mid-run, which drops the active quest entirely.

The whole loop takes only a couple of minutes once the invasion starts, and the code stays the same on every run, so repeat attempts are mostly a matter of catching the event and clearing the castle quickly.