High school students Lin Jin and Su Wanqing survive a catastrophe by sheer luck.
Overnight, their familiar classmates turn into monsters that tear at flesh, and sunlight becomes a deadly weapon. They sleep by day and travel by night, struggling to survive amid the monsters' howls and scorching heat.
The monsters are evolving. They devour their own kind to gain even greater strength.
Monsters, heat, escape;
Humanity, choices, hope.
As former classmates become enemies, and survival demands that they cross moral lines, they find resolve in moments of confusion and grow stronger through anger, again and again.
In the end, they uncover the true source of the disaster.
