orty‑two‑year‑old Jasper Thompson is set up for divorce by his wife Karen. In despair, he makes a mysterious pact with an invisible devil. Each bold and reckless act earns him youth restoration, better physical fitness and substantial rewards. He rescues his son Leo from unhealthy infatuation, and publicly apologizes to his daughter Molly on campus to fix their fractured relationship. Later, he uncovers a secret: Karen stole love letters from business tycoon Rachel Taylor thirteen years before. Faced with affection‑filled pursuit from Miranda Morgan and Rachel, Jasper turns down marriage‑for‑fortune deals and insists on personal independence. In the end, he develops a smash‑hit AI‑powered dating game, lifts his company’s valuation to billions and retrieves his youthful passion.