The plaque is on the fountain outside. It has various planets, stars, and moons on it. (You will need to take the Secret Message to the upper floor of the mill to get the password symbols.)
To see the solar system on Astro Knights island, go to the Planetarium. (not part of the game, but an interesting view)
go to the secret door
next to a bookshelf.
It will help you go down to the Mordred club.
In the palace the right door
IS IN DA LIBRARY... SOMWEAR.... and i dongt
You don't need to.
There are two books in the library and one in Mordred's laboratory.
You do not get or use a bucket on Astro Knights Island.
There is no treasure chest on Astro Knights Island.
you cant i have that same problem too
under the library, you click on the McM label and stairs appear