Netflix unveiled the official “Gyeongseong Creature” trailer, starring South Korean stars Han So-hee and Park Seo-joon, featuring a mix of historical drama and speculative fiction.

“Gyeongseong, 1945. In Seoul's grim era under colonial rule, an entrepreneur and a sleuth fight for survival and face a monster born out of human greed,” the logline read.

The two-minute trailer follows detective Yoon Chae-ok (So-hee) looking for the infamous Jang Tae-sang (Seo-joon) to investigate the suspicious basement of Ongseong Hospital.

Together, they unravel the spool of mystery tied with gore creatures living underneath the place while figuring out the behemoth of human greed lurking from beneath.

“But it turns out, there may be something even more dangerous out there than the creatures themselves,” a Netflix report teased.

Together with So-hee and Seo-joon are Claudia Kim, Kim Hae-sook, Cho Han-cheul, and Wi Ha-jun.

The upcoming series will premiere on December 22 and January 5, respectively.

Watch the official trailer below.