Oliver must handle another danger to the city when bombs begin to go off in Starling City. Felicity finds the individual setting them off is Mark Scheffer, a man who passes by the moniker Shrapnel. The Arrow finds Shrapnel's next objective is Sebastian Blood's "Solidarity Rally" and attempts to convince the councilman not to have it, however he won't. The Arrow embarks to stop the bombarding, however Shrapnel deceives him and traps him in a bomb-bound antique store where he can't move without setting off the gadget. While Felicity helps Oliver, Diggle races to the square to discover the ...