We learn about the importance of the stolen medallion and attempt to take it back along with the Black Pearl.
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https://www.youtube.com/watch?v=LN14xhC0m5Y
We introduce the Portrait Ghosts along with the other type of treasure ghost, finish up Area 1 and start Area 2.
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https://www.youtube.com/watch?v=bMjjXWt4Bhg