At thirty-eight, Lu Zhou suddenly died after yet another endless night of overtime. He had spent half his life striving and achieved a measure of success, yet his heart was full of youthful regrets: as a stubborn young man, he'd let down the girl who waited quietly for him, missed out on his dazzling white moonlight, drifted away from the brothers who had stood by his side, and broken his parents' hearts time and again. When he opened his eyes, he was back in a high school classroom in 2007, with just ninety-eight days left before the college entrance exam. Carrying the experience of middle age and a heart full of remorse, Lu Zhou stood at the crossroads of youth. This time, he didn't want to leave any regrets behind. As he buried himself in exam prep, he carefully navigated two very different budding romances, trying amid the youthful bustle of campus to make amends to everyone he'd once wronged.