In the winter of 1982, Lu Zhiyuan, the once-despised ne'er-do-well of the Lu family, returns reborn. With his sister's broken engagement, the Zhao family pressing for debts, and his entire family driven to a dead end, he signs a three-day promissory note, swearing to protect their house and family. From hunting wild boars in the mountains to roasting melon seeds for profit, and from county restaurants to heading south to Guangzhou to flip electronic watches, Lu Zhiyuan breaks through every deadlock, makes money, and alters his fate. As the ten-day deadline approaches, can he gather thirteen hundred yuan, take over the brick kiln, and ignite the first spark of the Lu family's comeback?