Part 1: Woo Jin finds out that all the research data was destroyed. He plotted for the research data in exchange for Beom Gyun's surgery to remove the bug and gave himself up as collateral. Woo Jin finds out Dong Geon's motives. Beom Gyun's surgery goes well and Woo Jin escapes. Woo Jin gets into an accident while running away from Human B and Dong Geon. The person coming down the stairs turned out to be Woo Jin's clone. At first, Joon Hyeok denies that he's Woo Jin because of the real Woo Jin who died. But as the clone tells him his memory of the day he disappeared, he apologizes. He says he's sorry for letting him go there alone.