Malcolm joins Darhk, his wife Ruve Adams, and the other leaders of H.I.V.E. where it is revealed that they are on "Phase 5" of their plan. In order tie-up loose ends, Darhk sends a group of mercenaries, known as the Demolition Team, to take out Captain Lance. They fail, and Felicity is able to track them to their hideout. Oliver, Thea, Laurel, and Diggle go after them but are almost killed when the Demolition Team destroy their own building to escape. Meanwhile, Thea discovers that Oliver has a son, and supports his decision to keep it a secret. With Curtis' help, Felicity realizes that Demolition Team are planning to destroy the venue for the mayoral debate between Oliver and Ruve, leaving Ruve alive as a sympathetic survivor. Oliver and his team stop the mercenaries in time for Oliver to win the debate. After, Darhk kidnaps William. In flashbacks, Oliver kills Conklin to win the trust of the other prisoners as Reiter forces them to dig for an "ultimate power" hidden on the island.