he brought her home to learn that she had no memory and then he learned that she had brought a spirit along with her. A spirit that sought to destory her.
Jaidev vowed to protect her and the spirit had other plans. It possessed her. To save her from the possession Jaidev needed to know what she had done to incur the wrath of the spirit, but then she had no memory. To save her he needed to find her past that even she did not remember.....and then time was running out.