- Apocalypse setting: Five years after the Red Mist disaster began, a worldwide red mist blankets the planet. Mutated creatures roam freely, human civilization has collapsed, and survivors have formed scattered bases. Resources are desperately scarce, and trust has become a luxury.
- Female lead: Lin Wan was an emergency room nurse before the disaster. She is now head of the medical team at Rock Base. Calm and decisive, she excels at wilderness first aid and close-quarters combat. Deep down, she has never stopped worrying about the male lead, who went missing.
- Male lead: Lu Zheng was a retired special forces soldier before the disaster. Now a lone wanderer, he is an exceptional fighter with a wide range of survival skills. Steady and taciturn, he has never stopped searching for the female lead.
- Central conflicts: Survival crises, including mutated creatures and competition for resources; tensions between bases, including internal power struggles and threats from hostile bases; and romantic entanglements, including rebuilding trust after their reunion and coming to terms with past regrets.
