Barry and the team look for another Firestorm match for Dr. Stein. When they turn up two candidates, Caitlin unmistakably prefers research scientist Dr. Henry Hewitt over ex-football-quarterback-turned-mechanic Jefferson Jackson, but in finding a proper match, a new meta-villain is born. Meanwhile, with a shark-man suggestively at large in the city, Joe coaches Iris in meeting her ex-addict mom, Barry in pursuing his growing attraction towards a police colleague, and Patty in keeping a break-in perp's identity away from Barry.