Chang Young has to fabricate Dol Mok's death, whereas Joong Tae has to prove Dol Mok is still alive. Chang Young gets scared of losing Cheonmun Group in case the truth gets revealed, so he locks Dol Mok in the basement of the villa. Joong Tae orders Joon Hee to seize and search the villa, but Dol Mok was already gone. (Source: Kocowa)