Malboro and Cucu, the starring characters, are two brothers who split after the older one, Malboro, went to prison five years. One day he is set free, willing to return to his life. Cucu is the younger brother, who has become a boxer with possible success, if only the beater he keeps somewhere inside, didn't arise in the worst moments. The relationship between the two brothers is somehow ambiguous, there's something unclear that caused Malboro's arrest. To complete the triangle is Uncle Jesus who has been like a father to them; a retired boxer who's always thinking about his past. Sara is Malboro's great love, a woman full of shame and resented after almost leaving her whole life behind to follow Malboro, but he failed in their attempt to run away because that same night, he got arrested by Rojas. Rojas is Sara's husband, a police officer who hates Malboro and will do anything to get him out of his way...

瓦伦丁（艾赫尼奥·德伯兹 Eugenio Derbez 饰）是城中有名的花花公子，在情海中徜徉多年的他自认为练就了一身“万花从中过片叶不沾身”的厉害本事。某一天，一位不速之客的到来将瓦伦丁平静的生活彻底打乱，这位不速之客不是别人，竟然是一个刚出生还没多久的小小婴儿。
瓦伦丁给孩子取名玛姬（洛蕾托·佩拉尔塔 Loreto Peralta 饰），就这样开始了自己的“奶爸”生涯。之后，瓦伦丁带着玛姬来到了洛杉矶，意在寻找玛姬的亲生母亲。一年接着一年，玛姬渐渐长大，瓦伦丁的事业也渐渐走上正轨，父女两人之间的羁绊越来越深，这一段真挚而感人的亲情，究竟会迎来怎样的终结呢？