A beautiful assassin meets her team mates brother who happens to be SHINee's Taemin whilst on a mission in Korea. She pretended to be her twin sister so he wouldnt know that she was the girl who died with his long lost twin brother the world never knew about. She was his first love and she had never felt any way about a guy in a long time. They ended up having a baby together but she have the baby boy to Taemin and ran back to America because if her agency ever found out Taemin and the baby would be killed. Taemin goes into a deep deep depression and almost commits suicide. While she was being captured and tortured by Al-Qaeda for 7 months. She broke out and killed Osama Bin Laden so she can finally go back to him and her son. But then he finds out she's an assassin and she lied to him about everything. He accepts her for who she really is.  

Taemin's love is unlike an love he has ever felt before and she feels the same way. Though the SHINee emebers try and lead Taemin down their idea of the right path but he is still trying to get her out of her mind while she is dealing with something much bigger than both of them...