Chen Yang faces company bankruptcy, a first-day loss at his street stall, and mounting debt, with both rent and his father's medical bills crushing down on him. In the depths of desperation, his phone unexpectedly unlocks a "tomorrow's hit products" prediction feature, allowing him to forecast commodity popularity and the logic behind blockbuster sales. Starting by selling raincoats at a subway entrance on a stormy night, he leverages precise scenario-based product selection to hit one bestseller after another, moving step by step in confrontations with the copycat Cao Ziang. From pushing a single-person cart at a night market to expanding into community group-buying and institutional supply channels, and further to building a supply chain and supporting novice stall owners, Chen Yang gradually pays off his debts, settles his family, and turns a small warehouse into a formal company.