Colony

Scientist Seo Young-chul warns the police that he will launch a bio-terrorist attack at the Dongwoo-ri Building, subsequently injecting himself with the supposed vaccine to his mutated slime mold bioweapon. Meanwhile, Chains Bio is holding a presentation inside the building, where its CEO, Kang Woo-chul, showcases the cell regeneration capabilities of the slime mold. Kwon Se-jeong, an ostracized and unemployed professor, has received an invitation to the presentation, and arrives looking for a job opportunity within the company with the recommendation of her ex-husband Han Gyu-sung, who is preparing to emigrate overseas. At the same time, Choi Hyun-seok, a security guard, accompanies his mobility-impaired older sister, Hyun-hee, at the shopping mall inside the building.