Chen Mo, an unemployed shut-in, scrapes by editing videos for a fake survival blogger. When the apocalypse comes, he hides away in a secluded ground-floor courtyard, doing whatever it takes to stay alive.
One day, while a gang of thugs chases a girl, he cowers behind a door, too afraid to help, and watches helplessly as they drag her away. Seven days later, he finally opens the door and rescues her, wrapping her in the dress he had prepared for his secret crush, Su Qing. But when she wakes, she looks at him with hatred, tears the dress to shreds, and leaves without a second thought.
He doesn't know that her name is Su Qian, and that she's Su Qing's younger sister.
Following the trail of blood, he finds her, only to be rejected. After leaving, he rescues another girl whose profile looks strikingly like Su Qing's. She takes a wound for him, and their chemistry grows. He thinks he's finally found someone he can survive alongside
But he doesn't know that the guilt flickering in her eyes is quietly hinting at a truth yet to be revealed.
