Male lead Wang Jianqiang has been transmigrated into the Hehuan Sect for ninety-six years. With poor innate aptitude, his cultivation is stuck at the third level of Qi Refining, and he has only two months of lifespan left. Just as he expects a shabby, unremarkable end, he unexpectedly activates the Super God Immortality Cultivation System. The system can optimize pill formulas and refine perfect pills with no pill toxicity; alchemy and cultivation both accumulate cultivation points to raise his cultivation level and alchemy talent. At first, his niece comes to ask for life-extending pills, and he reveals his strength with top-grade pills, shocking everyone in the sect. He keeps improving high-tier pill formulas, rising from a low-level alchemist all the way up, refining perfect pills in batches to exchange for spirit stone resources, and rapidly breaking through Qi Refining, Foundation Establishment, and Nascent Soul realms, restoring his youthful appearance and greatly extending his lifespan. Sect elders and prodigies of every branch repeatedly belittle and scheme against him, but he easily crushes them all with his pill advantages and system-granted cultivation. Later, he sees through the scheme by which the Hehuan Sect's ancestor controls everyone through the soul tablets in the Yin-Yang Hall. He joins forces with the sect's upright disciples to strike at night, destroys the Yin-Yang Hall, overthrows the ancestor's control, and takes charge of the sect. With endless alchemy foundations, he sweeps away all powerful enemies across the cultivation world, unlocking eternal immortality along the way and reaching the pinnacle of the immortal path.