Yoo Young-Bok
The partnership between Ha-neul and Bo-ra start wavering in the midst of launching their startup when their firefighting thermal imaging camera project fails followed by a notice to move out of their studio due to outstanding monthly rent. As things go from bad to worse, a strange man suddenly appears in the middle of their studio, insisting that the place is his factory.
Yong-su
Yong-Nam (Cho Jung-Seok) ha estado desempleado durante años. Tiene una celebración de cumpleaños número 70 para su madre en un salón de convenciones. Allí, Yong-Nam se encuentra con Ui-Joo (Yoona). Se graduó de la misma universidad que Yong-Nam. En ese momento, el gas venenoso se extiende por toda la ciudad.
Lee-So man (Part timer)
In the cartoon room, Joo Yeon, who got spoiler, starts the mystery of finding the criminal!
