Chen Bei, a factory worker, heard of an emergency at home and urgently needed to get back to celebrate the Mid-Autumn Festival. He dragged his brother Wang Dachui to borrow a car from the boss. Along the way, things went wrong one after another: a broken car broke down, an ox cart eloped, and the two squeezed onto a children's bicycle to rush on their way. On the way, they accidentally encountered a distressed passerby in labor and stepped forward to help, and then halfway through, they met villagers looting life-saving melons. After the twists and turns, they unexpectedly harvested a Mercedes-Benz, but on the return journey, the family debt problem that Chen Bei had hidden for many years was still waiting for him ahead.