Perjodohan adalah suatu beban bagi gadis berusia 16 tahun, dia bernama Tasya. Dijodohkan dengan Lee Haechan adalah mimpi buruknya. Mimpi yang paling buruk dari semua mimpi buruknya Namun siapa sangka? Tasya malah terjatuh kedalam pesona seorang Lee Haechan
Siyeon is known at her school as being the dependable and hardworking student, and for this reason she's never actually had a boyfriend or been in love before, not since that incident in her past, her friends often made fun of her and joked about her being single, all in good fun of course, they wanted nothing more than for her heart to be opened again. Can you blame her for being closed off? In the past she had someone she really liked but in the end he broke her heart and betrayed her trust, she did get over it but that doesn't mean it left her without scars, so she locked her heart up and threw away the key to protect herself from being hurt again. However, when her friend Seol bets that Siyeon can fall in love in a day, she confidently takes on her bet thinking that it was impossible for her to actually fall in love in a day, the reward being 100 dollars to whoever wins. All she has to do is not fall in love. Sounds easy right? But unknown to Siyeon, this bet was all apart of Seol's "genius plan" to help her date again. Will Seol's plan backfire or will it work? Will Siyeon win the bet even after meeting the handsome and good looking Baekhyun or will she fall for his charms? Find out in this Romance!!!!!