Shinwoo is passing his time switching over the TV channels at Ikhan's home when he comes across the news of the disappearance of Mr. Lee Mo, the security guard of his apartment. Shinwoo calls Yuna to make sure that she is safe. However, her phone is answered by a male voice. M-21 tells Shinwoo to come and rescue Yuna and that any involvement with police will lead to Yuna's death. Shinwoo wastes no time and dashes out while Ik-Han contacts the Principal.