The industrial disaster triggered the spread of global poisonous fog and the rampant mutant creatures. The protagonist Jiang Yue obtained the [Purification Code System]. The poisonous mist corrodes everything. Human beings hide behind anti-virus barriers and rely on limited antidotes to survive. System tasks include collecting purification factors, developing anti-venom agents, and building purification barriers. Jiang Yue went deep into the core of the poisonous fog to find the source of the disaster, encountered a crazy organization that mastered poisonous fog technology, unlocked the ancient purification techniques in the code, gradually dispelled the poisonous fog, and restored the earth's ecology.