Jang Hyo Ra is a Girl who lives with Her Uncle and Her Aunt in a smaa town. Her Father is a famous businessman, and he is affraid his Daughter will have the same life as someone he knew from the past who was died because of Competition between Companies. That is the reason why Jang Hyo Ra lives with her another 'Parents' since she was 12 years old. Her Uncle, is the great ex member of KSA (Korean Secret Agent), and he teached her how to use weapon to defense herself and it works, She can use every weapon, from guns, knife and also an arrow. 12 years later, Hyo Ra is grown up as a beautiful and strong girl. Her skin has changed into Brownish because of her 12 years training, but she looks beautiful. Her parents called her to come back home, and there comes her new Life.

To start her new, she meets Lee Sung Yeol, and also handsome man, Kim Sung Gyu. She also meets Choi Hye Bi, new Bestie, and New anemy, Shin Ga Eun.

And also Kim Myung Soo's life and his Little Brother, Kim Woo Hyun. A Misterious Pretty Boy, Lee Sung Jong.

Lee Ho Won also have own Strories, His Past and His Grandpa. Jang Dong Woo is Ho Won's Brother who have Misterious Past.

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Jang Hyo Ra meets her First Love. But, First Love never ends up happily ever after. But Someone Unpredictablely comes and changes her life drastically. Not only her life but also her heart that had been hurt in the past. But when she surrenders her love, another strom comes. She has to Protect  Her Families, Her Friends and also Her Only Love since her life is the bet. Can She pass through her tough life?