An endless train races through a land of desperate danger. Every platform may conceal a deadly trap, with all kinds of monsters, humans whose motives are impossible to read, and a perilous struggle for survival at every turn.
Chen Mu faces the dangers alone, while Ji Ran seems gentle but is strong inside. Together, they fight to survive aboard the train. From classmates with secret crushes on each other to testing one another in life-or-death situations and finally entrusting their lives to one another, Chen Mu uses his sharp edge as a shield to keep Ji Ran safe, while Ji Ran’s tenderness shines like a light, warming Chen Mu’s loneliness.
In this desperate world, each becomes the other’s weakness and armor. As they wager their lives against death, they hide their profound affection in every battle fought side by side, kindling the blazing spark of mutual salvation amid their endless struggle to survive.
