The Dink Network

Hello, my CC 2 works fine altlast!
Now I'm asking you a little help.
I've got the boss mode. I've been playing it. There's the giant pig Thargo.
But how can I get to it in story game?

You need to have Alessa with you, enter the fallen wreckage of Cloud Castle, go up the stairs and talk to the invisible thing that you can hear in there...

Uh... thanks.
But how I supposed to know where it is, if it's invisible?
And how can I get to inside cloud castle? There's no gate!

Blow a hole in it using a bomb.

Make sure you place the bomb over the hole when you blow it up.