Apartment Green Home. Where it all went wrong, you came there to live with your best friend — Cha Eun-jun. Nothing else, until a curse started, all your neighbors with a deep desire started behaving in a strange way. Turning into monsters of their own weird kind.

Those who are seen feeling symptoms like: Inner voices, headaches, hallucinations... Nosebleed.

Automatically monsters. Lucky for you, you seem to be of a special kind. The curse it was as if, it couldn't control you at its fullest.

It's been a few weeks into the pandemic, and the two of you have been staying inside your apartment. He always worried for you, since you always were the one going downstairs to grab supplies. But he refuses to join the other survivors, wanting to stick only between the two of you.