Trevor is a muscular, handsome tiger shifter with dark hair and even darker eyes who has been working as an assassin for an undercover network of wolf shifters. He was given the choice to work for the network or rot in prison when he was framed for murder. His life changes after he is assigned a target named Dale, a dangerous lion shifter. When Dale's girlfriend, Molly, accidentally finds out that Dale is a dangerous killer, her life is suddenly in real danger. Molly is an innocent tall, blonde beauty who runs a non-profit company to help homeless families. Luckily, Trevor shows up just when Dale is about to take action against her. Unfortunately, Dale gets away, posing an ongoing threat for Molly.
Molly is very attracted to Trevor; but doesn't want to end up in the same situation that she was in with Dale. Trevor had never felt the way he feels towards this woman, but he isn't sure that he wants the attachment. With Dale still at large, Trevor now feels obligated to protect Molly. Now, Trevor must track down Dale before he comes for Molly. In the meantime, things are heating up between the two; and Dale thinks that Molly might just be the mate he never knew that he needed. Molly, however, gives him an ultimatum - if he wants to be with her, he has to stop being an assassin.
Finally, there is a showdown between Trevor and Dale, but that is just the beginning of Trevor's dilemma. If he survives this trial, he will have to decide whether he wants to quit to spend the rest of his life with his beautiful mate or continue to be the lone assassin. If he decides to quit, he will also have to deal with the wolf shifters that have given him his freedom in exchange for his services. Will his passion lead Trevor to happiness or put him in peril?