以主人翁凱文·阿諾回憶他在1968年至1973年期間度過的少年時代（12～17歲，由弗瑞德·薩維奇飾演）回憶為故事主軸，並以成年的凱文旁白（丹尼爾·史登）負責串場，且正好是設定成本片在美國首播期間（1988年-1993年）的20年前。各季故事中融合了以當時凱文年齡觀點而言的典型社會時事（如越戰、總統選舉），與印象深刻的事件（如考試、升學、畢業）。每集的主線包括凱文跟鄰家女孩溫妮的甜蜜戀情、與家人間的溫暖插曲、朋友間的苦澀體驗等，並搭配成年凱文帶有懷舊與嘲諷語調的旁白。本片整體上是個以典型美國少年都曾有過的生活體驗為題材，與少年歷經各種經驗長大成人的故事。

Follow the misadventures of 11-year-old Joe Connolly and his three best friends in their first year at O’Malley Middle School.

Based on true events, The Hunt For The Unicorn Killer tells the shocking story of Ira Einhorn, a respected American peace activist in 1970s America. He lives with Holly Maddux (Naomi Watts), but when he tries to leave him in 1977, she suddenly disappears under mysterious circumstances. Somewhat later, her lifeless body is found in a suitcase in the flat of Einhorn, who has meanwhile fled the country and in the following years cleverly manages to stay one step ahead of the authorities. However, Holly's father remains determined to bring justice in his daughter's name and after a lengthy manhunt, he finds the 'unicorn killer' in France in 1997.