In this guide, you will find out how to do the secret door quest in Disney Dreamlight Valley. So Mickey will give you a chest and you have to open it.
It will be an image of a place where there is a secret door. Now you need to find the secret door. It’s in the castle on the right side of the stairs.
After that, talk to Mickey and it will say you’ll need gemstones to open it up.
The gems you will need are shown in the image below.
Tourmaline, Aquamarine, Citrine, Peridot, and Garnet.
Once you put all those gems in, the door will open up and you’ll find the hidden room that Mickey forgot. Mickey will give you a gift and your quest will be completed.