Story : Jung-hyun joins Youngjingyo as the next heir who will replace Jae-young. Watching those inside who are merely waiting to face their death, Jung-hyun comes to the conclusion that she needs to take extreme measures. Meanwhile, Kyung-ho, after the release from the prison, pays Kyung-sook, his mother, a visit before the last phase of the experiment. Hyung-in at the same time realizes the intention behind Kyung-ho’s message.