A man is on his way home when the poorly constructed tunnel he is driving through collapses, leaving him trapped leaving himself for the unexpected whilst emergency services struggle to help.
A lawyer with a ten-percent winning rate is caught up in a murder case and becomes the notorious and genius con artist, Big Mouse, overnight. In order to survive and protect his family, he tries to reveal the true colors of the privileged people involved in a huge conspiracy.
After Hee-jin's younger sister So-jin, who is possessed by a spirit,disappears,the neighbors die one by one and a secret underlying their deaths is revealed.
