This section gathers all known information on the Mt. Songni Incident, which is the incident Dr. Ju Yeonghwa was involved in 13 years ago.

Chapter 1: The Mt. Songni incident is mentioned in a comment by a netizen which is shown when Daegeun is browsing on his phone. Another comment says the incident was a big deal in the whole country back then. According to Lt. Kwon, Dr. Ju was only in college during the incident. Back then, all the survivors’ ages, faces, and pictures of this incident were broadcasted to the public because of the lack of privacy laws. And although not explicitly stated, Dr. Ju implied that the investigation team in charge of this incident messed up by not taking the survivors’ alibis right away.