少女琳(陈慧琳)患有血癌,就在她迷失于生与死的边缘时,结识了成熟稳重的苏格兰船员阿德(王敏德),听过阿德所讲的关于他故乡天涯海角的故事后,琳感觉到一份莫名的缘分,然而突然间阿德消失,失落之际,琳碰到专门替人寻找失物的阿虫(金城武),聘请下他寻找阿德,经过阿虫的辛苦努力,琳与阿德终又见面,原来阿德准备回故乡定居。 阿德走后,琳和阿虫一起做事时获得一种从没有过的充实和快乐,然而她的心里始终惦念着天涯海角,并决定在生命结束之前,一定要去那里一趟。Lam meets Mr. Worm, the chief of a lost-and-found company, and tasks him to find her lost lover Ted for her. Flashbacks show she was diagnosed as having leukemia. While recuperating she helps Mr. Worm solve a very hard case. Before she gets any worse, Lam decides to visit Ted's homeland in St Kilda, Scotland, to find where "the ends of the world" is. Along the way, she discovers more about herself and life than she was initially looking for.