On Christmas Eve, Sun’s family urges Sun and Mei to go out and have fun. In front of the family, Sun and Mei pretend to be very loving; but once they step out of the door, they go separate ways. Surprisingly, they come across each other again on the streets. At first, they are a bit nervous and embarrassed; but very soon, they are talking happily. They go to see the fortune-teller together and are told they are a perfect couple. Shui wants them to join a competition for perfect couples. Fa objects. But when she knows that many couples break up after joining the competition, she agrees to let Sun and Mei take part in it. During the competition, Sun and Mei discover that they know nothing about each other and are frequently punished. By chance, they win the match in the end, but Sun accidentally hurt Mei. Shui and Sun are very lazy at work and Fu’s father, Choi, wants to fire them. Fu pleads for them and let them stay……