Director:
One day / he met a nomad (played by Aaron Kwok). The nomad lived an unstable life / either picking up girls or betting on horses. The kind-hearted Chen Jiafu took him in. One day / a girl named Mo Min'er (Kelly Chen) who likes to play Bach's favorite concertos moved upstairs. Chen Jiafu fell in love with her at first sight / but he could never express his affection for her. Soon / Mo Min'er was taken over by the nomad / and the two became a couple. Finally / Chen Jiafu told a story about the "XO Heroes". It turns out that everyone in the world is looking for his Mo Min'er. If he is lucky / he finds her / but if he is unlucky / he can't find her for the rest of his life. That's how love is.
Cast:
Takeshi Kaneshiro / Aaron Kwok / Kelly Chan / Ho Chiu-yee / Anita Yuen / Leslie Cheung / Jacky Cheung / Zhen Zhen
陈家富（金城武饰）是个调琴师，有点木讷的他每日过着重复的生活。某日，他和游牧人（郭富城饰）相遇，游牧人的生活居无定所，不是泡妞就是赌马，好心的陈家富收留了他。 某日，他俩的楼上搬来了一个喜欢弹巴赫爱的协奏曲的女生莫敏儿（陈慧琳饰），陈家富对其一见钟情，但是却始终无法对其表达自己的好感，很快，莫敏儿被游牧人捷足先登，两人成了一对。 最后，陈家富讲了个“XO侠侣”的故事，原来世界上的每个人都在寻找他的