a undercover agent as a singer, protects a family that is in danger. Donghae finds that someone is after his friend Yoochun and his little sister. Chung-Ae an assassinator works for a gang to protect her brother. During a mission Chung-Ae not knowing that Yoochun would be there, accidenly attacks her  brother and Donghae.  Donghae telling yoochun that hes an under cover cop looking for the gang that Chung-ae is working for. Chung-ae has to find a way to get rid of Donghae without Yoochun, D

"You want me to do what!!" "Its the best for all of us" "And YOU want ME to TRUST YOU!?"....... 18 year old Park Yoona and Park Junni are stepsisters, same dad but different moms. Yoona's mom is in the mental hospital after a mental break down when Yoona was 5. Since then shes hated her dad for not taking care of her mother and also disliked Junni's mom. After her couple years of living with Junni, Yoona has grown attached to Junni but doesnt show it often. There