성준은 은기의 엄마가 당시 희망복지원 간호사라는 것을 알게 되고, 희망복지원에 대해 수사하기 위해 찾아간다. 은기 엄마는 성준을 보고 놀라며 안절부절못하는데... 그날 밤, 성준은 은기의 긴급호출을 받고 곧장 아동센터로 달려간다. 혹시 은기에게 무슨 일이 생긴 것일까…?
Sung-jun finds out Eun-ki's mother had worked as a nurse at Hope Welfare Center. To further investigate, Sung-jun goes to meet her. When he finds her, Eun-ki's mother shakes nervously. That night, Sung-jun senses that Eun-ki could be in danger and races to the children's center to see her. Will something happen to Eun-ki?
Sung-joon erfährt, dass Eun-kis Mutter eine Pflegerin im „Hope-Welfare-Zentrum” war. Er besucht sie im Rahmen seiner Ermittlungen, und seine Anwesenheit macht sie sichtlich nervös. Am Abend erhält Sung-joon einen Anruf von Eun-ki und eilt zum Kinderheim. Ist Eun-ki in Gefahr?