몰아치는 사건들을 겪어가면서, 서로에게 좀 더 가까운 사람이 되어가는 해준과 윤영. 한편 우정리에선 다시 누군가 실종되는 일이 벌어진다. 사라진 자리에 성냥갑을 남긴 채로.
The case grows more perplexing and convoluted with every investigation conducted by Hae-jun and Yoon-young. In the midst of her own emotional turmoil following her sister's demise, Soon-ae's predominant worry revolves around her mother's well-being. On a calm evening, when everything appears serene, Hae-jun receives an urgent and terrified call from Bum-ryong.
