Dark Hole

Detective Hwasun chases killer Sooyeon to Muji, facing a sinister sinkhole.

Hwasun overcomes sinkhole smoke hallucinations with Taehan's aid.

Hwasun searches for Doyoon amid black smoke and mutants, entering the mysterious Guseonwon.

Taehan learns survivors are trapped; risks with Park Sun-il to rescue them on 5th floor.

Hwasun risks corridor of mutants to reach infirmary; peril ensues with unexpected help.

School chaos as barricades collapse; Hwasun, Dongrim battle mutants in gym, attempt escape.

Hwasun overcomes hallucinations with Doyoon's help, escaping school with survivors.

Facing mutation, Hwasun survives near-death encounter with Sooyeon.

Tae-han rescues Sunil at the hospital but is captured by Kim Sun-nyeo's group.

Corpses with chest wounds, vent discoveries lead to hospital lobby pursuit of the host monster.

Amid suspicion and tension, they pursue liquid nitrogen against the monsters.

Dark monsters kidnap Doyoon, revealing a shocking truth at the factory.