故事发生在六十年代的美国，勒维恩（奥斯卡·伊萨克 Oscar Isaac 饰）是一位名不见经传的民谣歌手，生活困顿的他无家可归亦没有固定的工作，每晚得靠朋友们的救济才得以寻得安身之处。可是，尽管陷入了窘境，但固执的勒维恩却不愿意了顺应大众的喜好而做出无奈的改变，也正因为此，他和交往多年的好友简（凯瑞·穆丽根 Carey Mulligan 饰）和吉姆（贾斯汀·丁伯莱克 Justin Timberlake 饰）之间的关系也跌落到了冰点，更让勒维恩感到烦心的是，简的腹中竟然怀上了自己的孩子。
Juan Debré has spent a lifetime playing a hero in a popular TV series. When he is diagnosed with a terminal illness, he withdraws from his everyday life. Aware of having wasted his life, he escapes from a film shoot to travel to Brussels. In the land of his childhood hero, Tintin, he seeks to answer a question that has haunted him all his life: ?Could I be a real-life hero??
