JT throws Vincent a surprise bachelor party. Unfortunately, it is interrupted by a mysterious sniper with his sights set on putting a stop to Vincent and Cat's interference with the super human experiments. Cat's family comes to town for a bridal shower arranged by Heather but Cat is distracted by having to visit her imprisoned father (guest star Ted Whittall) to ask for his help.

Cat's thrilled about her pending nuptials, but is distracted by the notion that the rash of superhuman experiments could ruin her big day, so Vincent, JT and Tess do their best to keep her eyes on the prize.