While attempting to learn more about Vincent's mission, Cat gets kidnapped by Vincent. Their growing chemistry complicates his mission. Meanwhile, Tess, J.T. and Gabe come together to help Cat.

After getting stonewalled by Cat in his quest to track down a suspected beast, Gabe enlists Vincent's help, but Vincent quickly takes matters into his own hands. Unfortunately, the beast as an advantage over Vincent that requires Cat's help, in addition to the help of someone else who opens up old wounds from Vincent's past.