Wang Jinsheng (played by Aaron Kwok), a dance teacher in Shanghai, was born with severe color blindness and lived in a gray world. One day, Wang Jinsheng went to the street for a promotional event. When he was performing, he met Le Er (played by Cecilia Cheung) who had mixed into the team. They danced closely on the street. The two people who had never met before were unusually in sync. Later, the two met again on the street. Wang Jinsheng heroically saved the beauty and drove away the people who harassed Le Er. A few days later, Le Er came to the dance center and invited Wang Jinsheng to accompany her to Suzhou. Le Er revealed to him that she was a Chinese-Japanese mixed-race and left Japan to Shanghai to escape marriage. The two had a happy holiday, and Wang Jinsheng's world seemed to have color, but feelings were not easy to measure. Wang Jinsheng was not Le Er's ideal man. After the holiday, she decided to return to Japan to get married. Wang Jinsheng was in great pain and decided to go to Japan to pursue true love...