After transmigrating into the world of Ode to Joy, Lu Cang unlocks a hundredfold cashback System: any money he gives to others is returned to him a hundred times over, with one rule: the gift must be completely unconditional. At twenty-five, he is a licensed CPA and financial director who sets his sights on the sincere and exceptionally pure-hearted intern Guan Ju'er. A concert at a grand theater brings them together, and his gentle sincerity gradually wins over the sensitive, reserved Guan Ju'er. Amid the bustle of Shanghai and the melodies of classical music, the two grow closer, embarking on a heartwarming romance and a life of wealth.