Raat Rani, Danny Denzongpa Nepali song. What is the meaning ???

Raat Rani : Danny Denzongpa, Original Nepali Song. Can anyone mention details related to the lyrics / meaning of the song. No one seems to have a clue about the exact meaning of the song. It will be simply great if anyone can explain the meaning of the song. I do not know the details of the production house / creator of the song / video. The song was freely downloaded from the net. All trademarks / copyrights / ownership rights of the song / video belong to their owners and are acknowledged. By uploading this video I am not claiming any rights at all. The sole purpose of uploading this video is to request users / viewers to explain the meaning of this classic Nepali song.