In an abandoned, barren desert ravaged by raiders and wild beasts, something else lurks beneath the surface. The Lycoria fungus blooms at the brink of every twilight, taking the lives of any unprotected victim. Sorin, a sleep deprived yet determined researcher of Lycoria, takes on a mission to extinguish the deadly mold. On his perilous journey however, he soon discovers that death isn't the greatest danger of Lycoria.