影片以马赛一个闷热的街区为背景，正遭受着热浪的侵袭。影片讲述了三个室友在阳台上兴高采烈地打探邻居的生活。直到深夜的一场酒局演变成一场血腥的闹剧。有时血腥，有时厚颜无耻，但始终充满乐趣。

He is 30 and just got out of jail after 12 years of detention. She is almost 24 and has a simple life away from the city. One day, he comes to her and she let him stay with her. That's complicated when your older brother needs to get back to a normal life. Between tenderness and bursts of laughter, his anger is sometimes out of control. However, she wants to help him. As for hi...

纽维尔将军（让·杜雅尔丹 Jean Dujardin 饰）即将和心爱的未婚妻宝林（诺米·梅兰特 Noémie Merlant 饰）携手步入婚姻的殿堂，在这个节骨眼上，他收到了征召令要他重返战场。临走之前，纽维尔答应宝林，会经常给她写信报平安，但之后，宝林却一封信也没有收到过。 宝林的姐姐伊丽莎白（梅拉尼·罗兰 Melanie Laurent 饰）不忍心看到妹妹每天苦苦等待的样子，于是决定冒充纽维尔给她写信，信中，伊丽莎白杜撰了许多英雄事迹，谁知道自豪的宝林竟然将这些信件四处放送，导致伊丽莎白信中捏造的纽维尔成为了当地的英雄。一晃眼三年过去了，当宝林和伊丽莎白都以为真正的纽维尔早已经为国捐躯时，纽维尔重新出现在了宝林的眼前，只不过只有他自己知道，他的身份，是一名逃兵。