1954 年台灣戒嚴時期，空軍少尉孫漢生(張孝全 飾)與妻子金皖平(朱璇 飾)，帶著兩名稚齡女兒小立及小周，居住於空軍眷村，生活樂也融融。一天，金重遇當年革命讀書會的好友歐陽千君(關穎 飾)，卻發現她已下嫁劉將軍(曾江 飾)，成為將軍夫人。不久之後，孫與金同時被憲兵拘捕；孫被控匪諜罪，而金則被指為思想左傾。父母被捕，孫家被查封，小立及小周頓失依靠，只得由鄰居高家和孫好友丁克強(范植偉 飾)分別照顧。 然而眷村中卻流傳著這樣一個故事，因為丁喜歡嫂子而誣告孫。金也被補，只因為演戲要演全套。結果孫慘遭處決，金卻被釋放回家。丁對金及兩名女兒時加照顧；最後，正如村民預料，金嫁給了丁。然而，丁有否陷害孫？同時金的好友歐陽及其夫劉將軍也被牽連，是否也與丁有關連？這四人間的關係就有如蜘蛛網一樣，千頭萬緒，難以追尋絲網的源頭…

Han-sun is a dashing fighter pilot. Having served in the civil war against the communists in mainland China during the late forties, he finally moves to Taiwan with his devoted wife, Ping, and his lovely daughters, Li and Zhou. Though they seem to walk through life without a care, a happy ending is not in store. The family’s dreams of a serene future are irreparably shattered one bright autumn afternoon when the girls return from school to find their home ransacked by the military police and their parents thrown in jail as suspected communist spies. Now at the mercy of Uncle Ding, a low-level government bureaucrat with a terrifying scarred face, the sisters quickly discover that reality is not what it appears to be.