In the summer when he was eighteen years old, Ling Chenxi walked into Fu Ziyu's life, bringing with him an ignorant first love and irrevocable pain. Ten years later, when they met again, they found that everything in the past was so unforgettable, as if it was yesterday, whether it was happiness or pain, only the words "Love me earlier" became the regret deep in their hearts that would never go away. That year, Fu Ziyan, Fu Ziyu, Ling Chenxi, Xia Ran, four young boys and girls, joked, played, bloomed, intertwined with love and friendship, the story started in the summer and ended in the summer...