上(shàng )古大(dà )神混元大(dà )师在仙(xiān )(🐽)游(yóu )问(wèn )道途中(🐌),不(🔼)慎(🌰)被魔蛛林的千(🛍)年彩蛛精吞食入腹,其弟子陆小(xiǎo )(🌰)道为解救师(shī )傅,将千年彩蛛精(jīng )打(dǎ )(🎲)死(sǐ )。不(🌗)料(🏇)彩蛛(zhū )精在临死前(🐿)将全身毒液侵注到(🎡)混元(yuán )大(dà )师体(💆)内(nèi ),混元大师从而(ér )变成了彩蛛的样貌。为解混元大师(🚑)之毒(dú ),师徒二人受鹿(lù )童(tóng )仙(xiān )子指(zhǐ )点前往九仙山灵宵(🛑)谷(⏯)寻找月牙(❔)池(💱),路(🌑)上(🎛)与一众妖怪展开了一系(✋)列啼笑皆(jiē )非的故(🙄)事。