Mocked for awakening an obsolete F-rank Flame Card, Lucas Gray discovers that fire is humanity's only weapon against a global plant apocalypse. With gifted scout Lena Blue, he uncovers a sentient root network ruled by the Mother Plant. As cities fall, Lucas inherits the ancient Flame King power and leads humanity's counterattack. After Lena sacrifices herself, he awakens the mythic World-End Flame.
