Yu Ran gets drunk and collapses outside Chen Yi's home. Returning late, Chen Yi finds her and takes her in to care for her, and the two are brought together by fate. After Yu Ran wakes up, she learns that Chen Yi loves tennis but never joined a team because he needed to pay his younger brother's medical bills, so she gets him onto the tennis team. In fact, Chen Yi has known Yu Ran for a long time, and it was because of her that he fell in love with tennis. Later, Yu Ran is found to have used performance-enhancing drugs and is banned from competing for five years, so she becomes a coach. But Chen Yi is convinced she's innocent and resolves to play tennis well enough to clear her name. After that, Chen Yi faces constant ostracism from his teammates, but through hard work and talent, he gradually makes a name for himself. Yu Ran, too, encounters many twists and turns in both her love life and career. Supporting each other, they face challenges from every direction and press on toward proving themselves and pursuing their dreams...
