OH!必胜奉顺英

作为大财团会长的私生子，吴必胜（安在旭 饰）的身份却从来没得到承认过。自从父亲去世后，祖母更是不把必胜母子俩看在眼里。得不到重视的必胜于是破罐子破摔，成为了街头的小混混，对所有事都无所谓。逃到首都的必胜身无分文，经朋友那，认识了在超市工作的店员奉顺英（蔡琳 饰）。起初，顺英对必胜的印象可谓糟糕之极，但渐渐也被必胜单纯的内心所打动。 　　而另一方面，父亲去世后，祖母接管了父亲的企业，本打算让另外一个孙子继位，可他却意外死去。无可奈何之下，祖母想起了流落在外的私生子必胜。于是，街头混混吴必胜一夜间成为了大财团的继承人！落差感极大的故事就此拉开序幕……Oh Pil-seung is a free-spirited, uneducated and somewhat lazy ordinary guy. One day, he gets identified as the long-lost grandson of a wealthy CEO and finds himself heir apparent to a top-level logistics company. Pil-seung struggles to rise to the challenge of his new responsibilities with the help of his stoic and perfectly efficient secretary Noh Yoo-jung, but his snobbish rivals and detractors gleefully wait for him to screw up. Bong Soon-young is the manager of a large discount store, and a veteran of disastrous relationships. Always wearing her heart on her sleeve, she falls for the stable, well-educated, and intelligent Yoon Jae-woong, who looks to be a perfect catch. But then she meets Pil-seung, who gets in the way of their romance. Initially annoyed at his boorish personality, as Soon-young gets to know Pil-seung, she begins to appreciate what a decent, warm-hearted human being he is.