Chen Chuan has eaten at Zhao Guifang's beef noodle shop for seven years. One day, when he asks for an extra spoonful of beef sauce, Zhao unexpectedly charges him two yuan and publicly tells him that if he thinks it's too expensive, he should never come back. Chen Chuan doesn't argue. Instead, following company procedures, he brings in a second beef noodle shop and lets employees choose freely. Zhao assumes customers are simply looking for something new. She repeatedly lowers prices, reduces portions, changes ingredients, and even reports her competitor, yet refuses to admit her own mistakes. As the regular customers gradually leave, she finally realizes that what destroyed her business was never those two yuan, but her belief that customers should be grateful to her for the privilege of spending their money.