Lu Linchuan travels through time into the immortal-cultivation world, becoming a lowly slave in a demonic sect's mine. Without any system-given elderly master, he originally thought he would have to cultivate as a mortal, but unexpectedly awakens a double-fish jade pendant capable of contacting his hometown. As soon as the news breaks out, the entire country is shocked, and a supreme meeting is convened overnight. "Approved! Establish the Otherworld Command Department immediately, code-named Nantianmen. Resources will be supplied infinitely, and Truth can even be mobilized when necessary. Now—mobilize the power of the entire country to support comrade Lu Linchuan in ascending to immortality first! With the entire Earth as his backing, cultivating immortality? Just lying down will do!"