Being a star brings the fame, gold and glory. The splendid and comfort, the dominance and popularity. While love, a four letter word that a certain guy tends to hate, scrutinized and belittled.

Naïve out of it, 17 and she brought a human out of this world. Believing into a saying that love brings happiness, joy and contentment. But what it brought her was a little innocent child, being left behind by the guy she loved the most who promised her forever.

Would she let her heart beat again for someone she had barely known? Would she ever take the risk just to revive the heart that was once she knew she loved someone that deep?

And this is a story about two strangers who had been connected just because of a simple deal of being a parent to a child named, Ryotaru.

A superstar, a happy-go-lucky guy, an out-going person, a cold heart-ed man. Cho Kyuhyun, that is how you can define him. Being Korea's fame and glory, he found his life as a robot, faking smiles and being dignified just to entertain a lot of people that believed in his own pretended charms. Everyone grieved for him, stalked, followed, admired, and worshipped him. All of the people around him thought he's just one popular idol who serves everyone to beam a smile on their faces. But then he never thought of being in a kind of situation that will change his life like forever -- being a substitute father. All of his beliefs where brushed away when he was obliged to love a kid who he never knew he had, or totally never his. He treated everything as a game, where he would role play a life as a father to his son, all of it were way too easy, but that was what he thought, but then...it's not.

A princess, a daughter, a heiress and a competitor, Seohyun Yamasaki. A Korean-Japanese who lived her life in a splendid, she was rich, got loads of love from everyone, but she was too in tame, naïve. She believed to a guy who she had barely known, fell for him and gave him everything, even her own body. He promised her forever, she fought for their relationship like for  million times but then her efforts went in garbage as the guy whom she loved the most left her leaving a clueless little thing inside her tummy. She lived 4 years of her life being dictated by her father, caring for her son alone and was forced to love someone who had been cleared as his fiancé. As when she gets back in Korea, what would happen if she meets someone who would she be dealing as a father to her son? Would it be temporary? Or would her son be attached to a guy who was once yet a stranger disguised as a father?

Let's now see how Seohyun Yamasaki's and Cho Kyuhyun's lives changes as the world revolves around them for being someone whom they didn't expect to be.

Would they pretend all the way? Or will they end up into something else?