McM is the shelf label for the lower aisle of the castle library (non-fiction). If you have the Library Slip, you can press this shelf to open the dungeon passageway.
Use the gold coin from the fountain to pay your admission into the mordred Museum, and get the Library slip from the stack of books. In the castle library (first floor right), go to the lower aisle and press the shelf marked Mc-M (for Mordred).
It's in the castle library (first floor, right side) on the "nonfiction" lower aisle. When you have the library slip , click on McM on the shelf and it will unlock a staircase to the castle dungeon.
You need the Library Slip to access the secret entrance in the castle library. Go to the fountain and get the gold coin there. Enter the Mordred Museum and locate the Library Slip in a stack of books.
it is McM
under the library, you click on the McM label and stairs appear
if you mean in astro knights, the mcm is in the library in the castle
Go to the library and then there will be a sign that says McM. Click on it and you're in!
in the castle library click mcm in the non-fiction section to get into the dungeon
McM
McM is the shelf label for the lower aisle of the castle library. If you have the Library Slip, you can press this shelf to open the dungeon passageway.
The library SLIP is marked "Non-fiction McM", which is the lower aisle in the library. Press the spot on the shelf marked McM.
The McM is on the bottom floor in the library. You can click on the mcm if you have the library card. The library card is in Mordred's house museum.
You do not get or use a bucket on Astro Knights Island.
you click on the paper under mcm
There is no treasure chest on Astro Knights Island.