威尔(大卫·瓦尔顿 David Walton 饰)一直过着自由自在随心所欲的生活,某日,一位名为菲奥娜(明妮·德里弗 Minnie Driver 饰)的单身母亲带着十一岁大的儿子马库斯(本杰明·斯托克汉姆 Benjamin Stockham 饰)成为了威尔的邻居。 母子两人的到来让威尔觉得非常不爽,因为马库斯不仅人小鬼大,还会毫无预警的闯入自己家,登堂入室恍若主人,更糟糕的是,碍于面子,威尔又不好发作,但让他和一个十一岁的男孩做朋友?这简直无法想象!威尔自己还是个“孩子”呢。随着时间的推移,威尔和马库斯之间的关系越来越近,渐渐的,威尔发现,马库斯给自己带来的,并不仅仅只有麻烦而已。Will Freeman lives a charmed existence. After writing a hit song, he was granted a life of free time, free love and freedom from financial woes. He's single, unemployed and loving it. So imagine his surprise when Fiona, a needy single mom and her oddly charming 11-year-old son, Marcus, move in next door and disrupt his perfect world. When Marcus begins dropping by his home unannounced, Will's not so sure about being a kid's new best friend, until, of course, Will discovers that women find single dads irresistible. That changes everything and a deal is struck: Marcus will pretend to be Will's son and, in return, Marcus is allowed to chill at Will's house, play ping-pong and gorge on steaks, something his very vegan mom would never allow. Before he realizes it, Will starts to enjoy the visits and even finds himself looking out for the kid. In fact, this newfound friendship may very well teach him a thing or two that he never imagined possible - about himself and caring for others.