First go to the library in the castle, click on the paper ball thing on the bottom then stairs will apear go down and there it is.
The secret room between the hay bales!
Nobody know's excatly what it is except for the creators that's why its called "Secret"
There's a lock under the hay in Astro Knights
You show her a secret message from the Princess. You find it in the Maid's room (castle first floor left).
If you have the Secret Message from the Princess (from the maid's room in the castle), the mill girl will give you the password to the secret room below the fountain. (see related question)
In the fountain. you have to find the password first.
go to the secret door
In the princesses bed room
There is no wishing well on Astro Knights island. There are :The spaceship fountain - there is a gold coin in the water, and if you take the secret message from the castle to the mill, the girl there will give you the password to open the secret passage under the fountain.The underground lab - Mordred's secret lab is hidden under the two bales of hay on the farm, and you will need the key from the secret room under the fountain.
You need the Princess's secret message from the maid's room (castle first floor left).
in the throne room.
There is no wishing well on Astro Knights island. There are :The spaceship fountain - there is a gold coin in the water, and if you take the secret message from the castle to the mill, the girl there will give you the password to open the secret passage under the fountain.The underground lab - Mordred's secret lab is hidden under the two bales of hay on the farm, and you will need the key from the secret room under the fountain.