In San Francisco, the sportsman Kay Hoog tells to the members of a club that he has found a message in a bottle with a map from a Harvard's missing professor telling about a treasure of an Inca lost civilization still alive. He decides to go to Peru to seek the gold. However, members of the secret criminal organization The Spiders leaded by Lio Sha break in Kay's mansion during the night and steal the map. Kay Hoog travels to Peru, where he retrieves his map and a document about the Diamond Ship from The Spiders. Later he saves the Priestess of the Sun Naela and brings her to San Francisco. However, The Spiders kill Naela and Kay Hoog promises revenge for the death of his love
八公（Forest 饰）是一条谜一样的犬，因为没有人知道它从哪里来。教授帕克（理查·基尔 Richard Gere 饰）在小镇的火车站拣到一只走失的小狗，冥冥中似乎注定小狗和帕克教授有着某种缘分，帕克一抱起这只小狗就再也放不下来，最终，帕克对小狗八公的疼爱感化了起初极力反对养狗的妻子卡特（琼·艾伦 Joan Allen 饰）。八公在帕克的呵护下慢慢长大，帕克上班时八公会一直把他送到车站，下班时八公也会早早便爬在车站等候，八公的忠诚让小镇的人家对它更加疼爱。有一天，八公在帕克要上班时表现异常，居然玩起了以往
