Inside the worm

Michael and Reena must have been falling for a solid minute as they travelled through the digestive tract of the worm.

His original plan was to grab Reena and fly her out of the worm's mouth. 

However, he felt something in his chest that was calling to him. It was a strange feeling, one that he couldn't quite explain.

He didn't know why he was feeling this way, but he knew that he could only find the answer at the bottom of the worm.

What can it be? Maybe a treasure left behind by the auction?

This was a good guess from Michael since he knew that Barnaby's auction happened once every year. It wouldn't be a stretch to think that they would reuse this specific Pocket Dimension throughout the different games of the bidding.

Because of that, there must be a chance that the worm swallowed something during that time.

And that something was good enough to be put in the auction.