Shen Yan, a top PhD graduate in mathematics, wakes up reborn as Lin Tuantuan, a three-year-old toddler.
Faced with parents who lie flat on the sofa every day and a rent bill stuck to the fridge, Tuantuan can't bear to watch her family eat through their savings. She decisively takes charge and sets her sights on a night-market stall.
Starting with a small wolf-tooth potato stall at the entrance to an alley, the three-year-old boss calls the shots. She knows how to calculate costs, adjust flavors, and market the food. Lin Fan and Su Wan, two layabouts, are forced to get to work, and amid all the scrambling, they turn their little food stall into a roaring success.
As the days go by amid the bustle and warmth of everyday life, Tuantuan grows up. Her long-hidden mathematical talent can no longer stay hidden. From a humble street stall, she makes her way back to the halls of academia and once again takes up the mantle of a doctoral advisor.
And the two unreliable layabout parents from back then have long since become the strongest support at her side.
