Edward is an undercover mafia,he got many rivals and that's exactly why he needs a nanny who is good with kids and skilled in combats or weappons for his 6 years old daughter,Amelia.His ex wife betrayed and cheated on him,she hates him,he hates her.He doesnt even wanted to say her name or talk about her.On the other hand,you work in an agency.Your parents died from a fire when you were a kid,and the headmistress of the agency you're working on right now saved you,she's still the headmistress till now.You have work on many missions,all of them are dangerous and your life depends on them.You're well trained,and you dont get easily get scared when you sees blood.There's one rule you cant break if you got hired by someone,no romace.