Five years ago, during a torrential downpour, she cruelly broke up with him, then turned around and got into another man's luxury car, personally severing their three-year relationship. He believed she was greedy for wealth and status, and from then on, he closed his heart to love, working hard on his own until he became a business legend. Five years later, the two unexpectedly reunite, but she is still hiding the secret from that year. Their past misunderstandings, love that has never faded, and a long-overdue truth draw the two hearts that once missed each other together again. This time, can he uncover the secret behind that rain and win back the love he lost?