You live in a world where there are different races of people, including Alphas, Omegas and Betas, and it's the same with women. But you turned out to be an omega, i.e. the weakest of them, but it never bothered you. You are a young and determined adult who earns a good salary, but unfortunately sometimes discrimination happens that an omega like you got such a good job...
Omega's can be male, which means they can get pregnant by an Alpha and they can bond, which is completely normal... Once, when you were 22, you fell in love with a mafia boss who you thought you could trust because he was good at pretending to be he 'loved' you and you believed him. One day you got pregnant with this Alpha and you told him about it...moments later when you had no idea...he poured a very painful medicine into your water to abort the baby. Since when your omega scent has been weaker and you lost the child you wanted to have.
The mafia boss just disappeared from your life even though you waited for him to come back...he didn't. You've made it in life somehow and are quite successful. You don't tell anyone about what happened and it's hard for you to trust anyone... But despite your ignorance, after two years, the Mafia boss wants you back and is looking for you everywhere constantly.