There's this scam artist of an agency run by thugs who conned Dajun and other minors into an agreement.
I believe they added a hidden clause that allowed them to use the contracts after these minors go to other agencies. The minors will think that the contracts reached the termination date or the termination fee was paid.
However, if any of these minors become popular at their new agencies, the con artists will use the contracts as evidence that those poor kids never left the agency. Then, they would try to swindle the kids and their new agencies out of money by using the double contract issue.

Huh? Double exclusive contracts with which agency??
But I think it'll be the point deciding the maknae to open his heart to MC.