main plot about a post apocalyptic world  where now vampires have come out of shadow because there is almost never any direct sunlight because nuclear war created clouds and they are hunting humans. Humans also couldn't fight back effectively against them because they have been weakened heavily because of war. Vampires are hunting in 2 different way one is nomadic hunting tribe where they capture humans and keep them alive and eat as per their pleasure. drinking blood of adult human last them for an year. Other way is they hide amongst human become part of their family as post war there were many orphans and many single family member looking for survival. there are plenty of empty homes. so usually a male vampire pretends to be helping them form a group/family protects them and over the years kill them one by one. main characters will be adult male vampire in looks around late 30s to early 40s, kind and handsome look (negative character), one female vampire look wise in hear early 20s or mid twenties, impulsive and with sharp looks( negative character), one human female in her late 40s to early 50s and teenage boy around 19-20 years old(protagonist). the story would be how vampire male and human female are living together for couple years now they are joined by female vampire and male human , male human join them first and after a month female vampire. As soon as boy starts living he became suspicious of male vampire disguised as human. he tries to convince human female but she ignored him and refused to believe , then he decide to expose him by gathering evidence but is also afraid of his life, things got difficult for  both male vampire and male human once female vampire starts living with them as male vampire was afraid his cover will be blown because of impulsiveness of young female vampire and male human was scared that if he gets caught trying to expose and escape from vampires he will be killed before he can save human female.