More and more innocent lives are lost as time passes by. The demon has possessed Eun Ho, and she is in dire need of an exorcism. The demon is tempting Soo Min to kill it along with Eun Ho in the name of the greater good. Tough decisions need to be made to exorcize the demon. (Source: Viu)

Woo Joo is sick again with an unknown cause. It is revealed that the demon that once haunted him before visited him in his dreams. Father Moon suspects it is the demon’s breath that has infected Woo Joo. Soon after Woo Joo’s arrival, many people around him are getting sick and having the same symptoms as Woo Joo. (Source: Viu)

634 Regia has located the demon and tries to exorcize it. Their plan, however, fails as the demon knew ahead of time and set a trap for 634 Regia. With some of the members detained by the police, Father Oh and Ms. Shin are the only two who can seal the demon. (Source: Viu)

Soo Min has been in a manipulated dream all this time. After finally waking up from his nightmare, he tells the members of 634 Regia about what happened in his dream. Now they are trying to find out where the demon is hiding and seal it back in the mother-of-pearl-box. They must act quickly, for Soo Min fears what happened in the dream will become a reality to relive through. (Source: Viu)

Sister Lee was attacked during a charity event and is in a critical condition. Father Oh and others chased the culprit down but fail to catch the culprit. For not following the rules, Father Oh is now facing the possibility of being excommunicated. 634 Regia does not have too much time left. (Source: Viu)

Sister Lee Hae Min thought it would be for the best to transport the mother of pearl box to a safer place. However, the mother of pearl box is snatched by the mysterious man who attacked Yong Pil. Meanwhile, Eun Ho has decided to give up on going to Venezuela to be near Soo Min. (Source: Viu)

Sister Hae Min and Bishop Kwak are discussing the future of 634 Regia following the incidents that led to Ki Sun’s demise. Bishop Kwak suggests its closure but Sister Hae Min disagrees pronouncing that its sacrifices have been greatly beneficial to the religious order. She confirms her conviction with a mention of the message from the Vatican for it to remain. Meanwhile, Soo Min and Mi Yeon continue the efforts in adapting to the reality without Ki Sun.

Soo Min and Eun Ho are having a meeting with Sister Hae Min who claims to know the way to bring back both of their lost memories but with a risk. Eun Ho decides to participate in the ritual desiring to identify the cause of her lost memories and Soo Min also agrees. In the flashback, Soo Min and Eun Ho first make acquaintance and find more about each other through a volunteer project at a remote island.