Mission-based time travel: The modern heroine Lin Wan is bound by the "Save Love Brain System" and is forced to travel to ancient times to become the regent Princess Shen Wuyu (original owner). The system claims that the original owner's love brain needs to be corrected to survive.
Body exchange contract: The soul of the original owner Shen Wuyu was imprisoned in the body, and he witnessed Lin Wan using his body to attract her husband Pei Qingyan; when Lin Wan was recalled by the system to modern times, Shen Wuyu had to endure Pei Qingyan's crazy revenge, and finally started the "soul replacement" ceremony with seven spells.
The bookstore connects to all worlds: After Lin Wan returned to modern times, he discovered that the ancestral bookstore can connect to other worlds. The ancient books on the bookshelf are actually gates to time and space. He needs to crack the runes to return to ancient times.
Kingdom of Gods conspiracy theory: The "Twelve Kingdoms of Gods" in the high plane use ladder trials as bait to absorb the emotional energy of mortals to maintain their rule. The system is actually a harvesting tool for the Kingdom of God. The essence of "Love Brain Rescue" is to stimulate extreme love and hate to extract energy.
Twin soul bond: Lin Wan and Shen Wuyu's souls resonated to form a "mirror symbiosis", one was injured and the other felt pain simultaneously; the two eventually discovered that each other was two sides of the same soul that was divided in the Kingdom of God.
