When two friends since childhood make a deal with a demon to save their lives, they both don't realize that if they break the deal, then the demon sets a curse on them. William and Bo both have curses set on them, and when one friend's curse threatens the life of the other. It rips apart their friendship for centuries. When William and Bo each meet their soul mates, they fatefully meet again and begin their friendship again. Both women help their men tame their curses and teach them how to control it. But, when enemies come knocking, will their friendship survive or will they both stand and fight the demon Damon who set the curse and the leader of the vampire and werewolf clan. Would William and Bo survive the fight or die protecting not only their friendship, but what belongs to both of them.

Two friends, one becomes a Vampire and the other werewolf as they test their friendship. As they have an ultimate showdown with Damon will they die or live on as unfamiliar creatures.