Arrow discovers who Cayden's allies are, and realizes that he's badly outnumbered. However, Curtis, Rene, and Dinah have their own plans. Meanwhile, Quentin worries about getting through to Black Siren while Cayden worries about Vigilante's loyalties.

Vince undertakes a risky mission to obtain the location of the thermobaric bomb for Team Arrow. Meanwhile, Dinah remembers how she met Vince and how they gained their powers.