21 years ago, young Cha Do-hyeon told Oh Ri-jin (Hwang Jung-eum), who was being abused by his father, to run away. He told her, "Let's get on to a train and run away from this place" and the two children were about to run.
However, Cha Joon-pyo (Secrete) appeared right before they could get out of the basement. Cha Do-hyeon begged saying, "I'm sorry. Please don't start".
Cha Joon-pyo sent out Cha Do-hyeon and started assaulting Oh Ri-jin. Cha Do-hyeon was helpless just standing outside the door and crying "Stop". Young Cha Do-hyeon blamed himself and started feeling headache.
Cha Do-hyeon all of sudden heard Shin Se-gi's voice telling him "You're not brave enough to do this. I'll do it for you". And young Cha Do-hyeon's eyes turned scary right after. Cha Do-hyeon set the fire to the house. On the match box little Cha Do-hyeon was holding to set the fire, it said, "New Centry" (Shin Se-gi).
As Cha Do-hyeon's memory kept emerging to the surface, he was distressed. Shin Se-gi told Cha Do-hyeon suffering from the recovered memory, "You created me. I saved the child. It was me who saved the child".
Meanwhile, Shin Se-gi went to see Oh Ri-jin and said, "I'm sorry. I came late".