For Park Ki-Yoong, anyone who achieved his sex drive height, having an orgasm was the greatest pleasure of his life. As the saying goes, persistence would persevere; Park Ki-desperate Yoong’s dream is to spend a free night with the girl he loves. Who’s waiting outside ut, what’s the dream about? Whenever he gets an orgasm, it’s time to rewind. Will he ever be able to step on from the time rift?