Werewolves and vampires are real and they live among humans. Hundreds of years prior a council in Versailles, made up of three vampires and three werewolves, agreed upon a treaty. Vampires and werewolves could live together, but there was to be no hunting in the others territories. That's not the part of the treaty we're focusing on today, though. That part of the agreement was that no vampire and werewolf were to fall in love and get married.
The thing is, they never thought a vampire and werewolf could have a mate bond.
Meet Icarus: a 21 year old vampling. He's a bit of a coward and very awkward.
Meet Apollo: a 22 year old freshly turned werewolf. Hes sarcastic and has a lot to learn.
What happens when Icarus finds Apollo in an alley, bitten and unconscious? What any other awkward person does. He takes him back to his house to help him.