The Storage Key is a key item used to open a locked room within Sea Mauville. This room contains numerous valuable items, including TM13 Ice Beam and the Beedrillite.
But getting this key is essentially its own sidequest in the game. To get the Storage Key you need to collect a series of other keys, each unlocking a room that contains the next key.
The order of keys to get is listed below:
|1||Key to Room 1||Northeast corridor, from a Tuber NPC|
|2||Key to Room 2||Room 1, inside the locker|
|3||Key to Room 6||Room 2, from one of the Teammates NPCs|
|4||Key to Room 4||Outside the ship, from a Fisherman NPC|
|5||Storage Key||Room 4, next to the bed|
- The seventh Gym Badge from Mossdeep City to use Dive outside of combat
- A Pokémon that knows HM03 Surf
- A Pokémon that knows HM07 Dive
If you’re ready, start by heading to Sea Mauville’s entrance:
“Key to Room 1” Location (Step-by-Step)
Step 1: From the entrance of Sea Mauville, surf to the side of the ship up ahead. Walk along the hallway to reach the ship’s main deck.
Step 2: Once you’re on the main deck, enter the doorway that takes you inside the ship.
Step 3: When inside, take a left and stroll straight down until you reach the end of the corridor.
Step 4: Use HM03 Surf on the water at the corridor’s end; then Dive at the spot where the water gets dark.
Step 5: Now that you’re underwater, follow the path heading south until you reach a corner.
Step 6: Turn right at the corner and continue eastward along the path.
Step 7: When you reach the next corner, follow the path that leads north.
Step 8: At the end of the path, return to the surface of the water by using Dive again.
Step 9: Once you’re back on the surface, head north through the corridor.
Step 10: At the end of the hallway, talk to the female Tuber wearing a pink inner tube. She will give you the Key to Room 1.
Step 11: Using Dive, make your way back to the left corridor of the ship. Then use the Key to Room 1 to open the locked room on the left.
“Key to Room 2” Location (Step-by-Step)
Step 1: Inside Room 1, interact with the locker on the left-hand wall to obtain the Key to Room 2.
Step 2: Use the Key to Room 2 to open Room 2, which is located directly below Room 1.
“Key to Room 6” Location (Step-by-Step)
Step 1: Inside Room 2 you’ll find two girls in the corner. Talk to the girl on the right to obtain the Key to Room 6.
Step 2: Then head back to the right corridor of the ship (back to the pink inner tuber girl) and use the Key to Room 6 to unlock Room 6. This room is located directly near the pink inner tuber girl who gave you the first key.
“Key to Room 4” Location (Step-by-Step)
Step 1: Inside Room 6, leave the ship using the door to the right.
Step 2: Once you’re outside, approach the Fisherman on the nearby island. Ask him if he’s caught anything to get the Key to Room 4.
Step 3: Return to the ship and use the Key to Room 4 to open Room 4, which is located right across the hall from Room 6.
Storage Key Location (Step-by-Step)
Step 1: Inside Room 4 you’ll find the Storage Key on the ground near the bed.
Step 2: Once you have the Storage Key, return outside to where the fisherman NPC was located. Then unlock the storage room on the side of the ship – this door is northwest from the fisherman’s location.
What the Storage Key Unlocks
When you open the locked room with the Storage Key, a brief cutscene will play. After that you can obtain all of the following items: