A secret that was kept for a long time, finally has been exposed, as well as her real form. Hyeyeon, who lived alone since young ever since her parents passed again, discovered that she had a long-lost brother and decided to search for him.

Throughout her life, she has been having nightmare and unknown symptoms. At the same time, she falls in love with a mysterious guy who knows about her more than herself.

While on her journey to find her long lost brother, she bumped into some pack wolves who saved her life and became her friends throughout the whole journey. 

With the help of her friends, will they be able to overcome the obstacles they are thrown at and will she be able to find her long lost brother?