凡(fán )人少年陆长庚,为救病重母(mǔ )亲,以凡人之躯(qū )苦役三年,只(zhī )求一颗救命仙(xiān )丹。机缘巧合下,他因诚实通(tōng )过河神考验,获(huò )得一把能劈(pī )开空间、连通(tōng )仙府的上古(gǔ )仙斧。凭借仙斧(fǔ )与五行杂灵根(gēn )的废物资质(zhì ),他在绝境中逆(nì )天改命,踏上(shàng )修仙路。为求得(dé )母亲解药,他被迫卷入太微(wēi )门四大长老与(yǔ )前代掌门遗(yí )留的血仇漩涡(wō ),成为所有人博弈的棋子。身(shēn )处死局,他一边(biān )藏拙周旋于(yú )各方势力之间(jiān ),一边与同样心怀死志的疯(fēng )癫护法莫老结(jié )下亦师亦友(yǒu )的羁绊。最终,他(tā )在死局中破(pò )局,拿到解药全(quán )身而退,带着故人的嘱托与(yǔ )信念,真正踏上(shàng )了那条属于(yú )自己的仙途。