《夢魘之旅》影片描述一位老年作曲家湯姆，患有嚴重的老年癡呆症，已經記不起任何成年時代的生活，腦海裡只剩下他10歲時的男孩生活，並在他的想像世界中尋求未知答案：生命中最重要的東西應該??是什麼？影片採用伴隨音樂走進一個男孩幻想世界中，發掘我們心中童年最寶貴的記憶。 Imaginaerum tells the story of an elderly composer, Tom, who suffers from severe dementia. As he has had the disease for years and has regressed into childhood, he remembers practically nothing from his adult life. His music, friends, all his past including the memory of his daughter are a blur in his fragile mind. All he has left is the imagination of a ten year old boy. As he drifts away into coma, it seems impossible to get back what he has lost. Or is it?