Ean has a critical mission to return to the future to save everyone. However, she becomes trapped in the distant past while trying to prevent the escape of alien prisoners who are locked up in the bodies of humans. Meanwhile, Muruk, who helps Ean escape various predicaments, is unnerved when he begins sensing the presence of a strange being in his body. Traveling through the centuries, they are trying to prevent the explosion of the haava.

In the middle of the night, a horrendous murder takes place in a public washroom. Major Crimes detective Dong-geun finds a crumpled up note inside the victim’s mouth. The note contains a date from 11 years ago, and as he digs deeper into the note, he finds out that the victim was a bully in the military, and Dong-geun gets a chance to reflect on his own unsavory past that he has forgotten until now.