十三岁的布鲁斯（Ben Radcliffe 饰）精通萨尔萨舞，在比赛场上无疑一颗光芒四射的明星，但在现实生活中，胆小又有些懦弱的布鲁斯却成为了同龄人们欺负的对象。一场意外的发生彻底摧毁了布鲁斯的自信，陷入了恐惧之中的布鲁斯放弃了舞蹈的理想，彻底的陷入了堕落的生活之中。 　　一晃眼二十二年过去，此时的布鲁斯（尼克·弗罗斯特 Nick Frost 饰）成为了一个一事无成的平庸胖子，生活中唯一的希望来自于美丽善良的女上司茱莉亚（拉什达·琼斯 Rashida Jones 饰），一个契机令布鲁斯下定决心对茱莉亚发起热情的攻势，在同事德鲁（克里斯·奥多德 Chris O'Dowd 饰）和姐姐萨姆（奥莉薇娅·柯尔曼 Olivia Colman 饰）鼓励和帮助之下，布鲁斯重回舞场，对自己发起了挑战。1987: A 13 year old natural born dancer with fire in his heels and snakes in his hips is working himself up to explode all over the UK Junior Salsa Championships. But then: a freakish bullying incident on the mean streets of London robs him of his confidence, and our young hero finds his life diverted down a very different path. So it is that 22 years later, an adult Bruce Garrett (Nick Frost) finds himself out-of-shape and unloved - trapped in a downward spiral of self-pity, repression and Nando's take-outs. Only Julia (Rashida Jones), his smart, funny, gorgeous new American boss, gives him reason to live. But she's untouchable. Out of his league, so he imagines, with her perfect smile and perfect life. Unknown to Bruce however, Julia has issues all of her own. Luckily for him, she also has a secret passion. Then there's Drew (Chris O'Dowd), his alpha male colleague and horny king-monkey of the office. With Drew making no secret of his desire to get (his words) "all up inside Julia", Bruce is forced into action. And thus, Bruce is once again brought face-to-face with the darkest and most powerful of his inner demons. Somehow, someway, and with a lot of hand-holding from loyal sister Sam (Olivia Colman) Bruce must learn how to unshackle his dancing beast, regain his long lost fury and claim the love of his life...and he's going to do it all On The Dance Floor...