From what I could gather...

Incheol went snooping around to find out about our mysterious top, including getting info from a detective. Incheol actually found out his "allies" (the ones who tried to get the property before him) might have something to do with pyeong-Hwa current situation. Including the hospitalization (or death?) Of one of his family members. That might be why the last attempt was called off, so to not rise suspicion. Now it's a question of "What will incheol do with this information?".