A couple on the verge of a nasty divorce attempt to sell their empty love nest and move on with their lives, separately. After a successful open house they are horrified to discover, days later, that a potential buyer didn't leave their home. While Alice is being held captive in the basement, the unannounced house guest moves in upstairs. She senses her capture is being kept a rebellious secret. She knows her way only way out if she can only get out alive.
安托万（马努•派耶 Manu Payet 饰）是一名鼓手，组织了一支乐队，其中的主唱安琪莉可（乔•贝尔 Joe Bel 饰）拥有很高的音乐天赋，是安托万重点培养的对象。安托万和妻子爱丽丝（奥黛丽•拉米 Audrey Lamy 饰）之间的关系一直十分的紧张，最终，两人的婚姻还是破裂了，如此一来，安托万必须承担照顾两个女儿的职责，这让并不善于此道的安托万感到十分的头大。 乐队正在经历最重要的时期，在这个节骨眼上，安琪莉可爱上了吉他手贝博特（布鲁诺•克莱勒丰 Bruno Clairefond 饰），他们的恋情自然让安托万感到十分的不安，乐队的稳定和团结岌岌可危。