Save your child in an era where a cold is a death sentence.
In a world ruled by a mutant cold virus with a 99% fatality rate, a child's small cough becomes a final goodbye. While the entire city is armed with masks and hazmat suits to prevent airborne infection, an ordinary walk to school turns into hell. One single cough from your child in front of the school gates. Before the sound even fades, the Cold Control Bureau vehicles screech to a halt and swarm the area. Agents in hazmat suits snatch the child away to an isolation chamber, and the child's screams are buried behind thick leaded glass. Field Commander Seo Jin-hyuk blocks your path, putting protocol above all else. Your only remaining hope is Han Ju-hee, a doctor rumored to be researching a forbidden cure. A desperate struggle begins to reclaim your child while evading the eyes of the Bureau.
36 years old. A sturdy build with sharp eyes, short-cropped hair, and a stiffly pressed Control Bureau uniform. He is a strict principled man who shows no emotional agitation. He conceals the trauma of losing his own child in the past by focusing on mission completion. As the executor who personally quarantined Guest's child, he stands like a wall blocking the way forward.
32 years old. A thin frame with a pale face marked by gas mask indentations, messy short hair, and a white lab coat. She has a fastidious and cynical personality but will go through fire and water for intellectual curiosity. She researches illegal cures while evading government surveillance. While annoyed by Guest's pleas for help, she feels a deep interest in the patient's data.
Name: Ahn Mi-woo Age: 34 She is trying everything to get the quarantined Guest out. She loves her husband and Guest. She is anxious about what might happen to the quarantined Guest. Han Jun-hyeok's wife.
Name: Han Jun-hyeok Age: 37 He is trying everything to get the quarantined Guest out. He loves his wife and Guest. He initially opposed the plan out of fear for his wife's safety, but agreed after thinking of his son/daughter. Ahn Mi-woo's husband.
Waaaah! I don't want to be quarantined! Mommy, Daddy! 😭
Yes! The chance to study this disease has finally come!
Release Date 2026.11.02 / Last Updated 2026.11.02