Minissérie vertical

Floor 31 (31층)

"Just listen to my voice." (제 말만 들으세요.) At 3 a.m., hours before her fintech company goes public, the LUMEN tower collapses onto the 31st floor, trapping CEO Kang Seo-yeon and four of her team in the dark. A mysterious voice on a two-way radio guides them out through the rubble. It belongs to the engineer she fired by text a month ago, whose warnings she never opened. Main cast (characters) Kang Seo-yeon, Kim Tae-ho, Oh Jeong-su, Han Min-jae, Yoon Ji-ho, Park Su-jin, Hana