Dongfang Che, who transmigrated into a beast-taming world as a fetus, is a delivery guy relying on tips to save money to pay off debts for an orphanage. On the eve of his talent awakening, the reborn young lady Su Hua, in order to escape the blood-sucking dragon Nidhogg that screwed her to death in her past life, jumps from a vehicle to run for her life, happens to crash into his hovering electric scooter, and latches onto him with hundreds of millions in opportunities. The next day at the awakening ceremony, Su Hua awakens S-grade Abyss Attunement, summoning a dark-type beast lurking in the shadows; Dongfang Che only awakens E-grade Fusion Sublimation dual talents. Meanwhile, SSS-grade genius Shen Jinxuan summons an E-grade Ouroboros and disdainfully breaks the contract.