X marks the spot. The YouTubers uncover a treasure map with the location of the next key, but dangerous pirates are hot on their trail. They have to brave Pirates' Bay to find the missing pieces, but only the most pirate-worthy among them will avoid death in this exhibit.

The Collector returns to the museum with her most terrifying collection yet and unleashes it on the YouTubers. They must journey back through all the exhibits to find the artifacts needed to defeat her and in turn discover the source of all evil.