After going bankrupt in his startup and being dumped by his girlfriend, Zhao Xiaofan hits rock bottom and binds the Dingdong Flash Sale System. He can snap up luxury cars, mansions, corporate equity and top-tier skills for only 9.9 yuan each. Rising from the bottom of society, he gets revenge on snobbish people. He meets Chen Luoshi, a wealthy heiress. With the power of his system, he resolves business crises and crushes plots for family power grabs. In the end, he gains both love and career, and the system fulfills its mission.