Deliveryman Leo Vance activates The Ultimate Retort System, obtaining rewards. He cures Arthur Wallace's granddaughter, Mia Wallace, of her illness. Leo crushes ex-girlfriend Chloe Cole and rival Sean Shaw. Using system abilities, he protects Mia Wallace, foils Frederick Wallace's plots to seize assets and assassinate her, exposing him as her parents' murderer. He and Mia Wallace fall in love. Leo transforms from a deliveryman into a successful winner with wealth, skills, Mia, and an empire.