As the apocalypse approaches, mutated plants have become the biggest threat to human existence. The former gardener {Gardening} awakens the purifying power of plants in a desperate situation. Starting from purifying the first mutated foxtail grass at his fingertips, he unlocked powers step by step, purifying small mutated plants in the alleys, cleaning up the ferocious green plants around the survivor's stronghold, and even faced the madness of the entire mutated forest. The "Plant Legion" using mutated plants as weapons turned out to be the biggest obstacle to the harmonious coexistence of humans and plants. Horticulture leads the survivors, using supernatural powers as blades and gardening knowledge as shield, to build exclusive botanical parks in the wasteland to fight against villains and sow vitality, so that the withered apocalypse can re-grow the greenery of hope, allowing humans and plants to return to the days of harmonious coexistence.