This is a story about the life of Arnav and Khushi. Arnav who is fighting with his demon without his Kaya. Only two person know him in and out, one is Aman Mathur his bestfriend and other is his Kayu whom he missed lot. He lost his Kayu in an accident which is planned. Except Aman no one know his true identity. Khushi who lost her family in accident when she was 12 years old. She missed her family and her Aru who is somewhere in this big world. She is not living but she is enjoying her life like her parents wants. She is mix of demon and angel. She hide who she is from everyone because of the promise which she gave her father on his death bed.