The Red Doll

Aria Vixen, the so called "Red Doll", has learned to live in the shadows ever since she was young; she learned how to use the darkness to her advantage, stricking when you least expect her to. This is why she is known as one of the best assassins in America.
She's ruthless; cunning; deadly; seeking revenge for her parents, who were taken away from her at a way too young age. She's a doll, covered in red "paint", which belongs to those unfortunate enough to have crossed her path.
She has never failed to eliminate one of her targets, until she was given the mission to eliminate Revon Thorn, also know as "The Viper". Alongside her, he's the best assassin out there, also leading the most powerful gang in the city.
They've been at each other's throats for months, both trying to eliminate the other and complete their missions, but, when Aria finds out that a war between Revon's gang and the one responsible for her parent's death is about to erupt, "The Red Doll" and "The Viper" are forced to work together.
Will they be able to put their pride aside and form a team, or kill each other before the war even starts?