Princess Shu Ying and Demon prince Eimu

The Princess who lost her throne by traitor Uncle and his fellows. She saw her father, mother and brother killed by her uncle's soldiers. Her bodyguard and maids helped her get out of the palace via secret passage. When she left her castle and kingdom. She was standing at the coral reeves barrier for a while. Then, she found the strange man lying down the sea floor near the coral reeves. She tried to save this man. After that, she told everything to him and he decided to help them. What will happen to her? Could he really help her?