Complete story — includes the ending
Oliver rushes Thea to a hospital, where her death is said to be inevitable. Maseo contacts Oliver to let him know that, if he accepts Ra's offer, he will be able to use the Lazarus Pit to heal her. Malcolm warns against this, stating that the pit changes a person in their soul, but Oliver decides to take her to Nanda Parbat regardless. Thea is dipped into the pit and comes out healed, but in a state of confusion, her memories jumbled. Felicity has sex with Oliver before drugging him so the team, aided by Maseo, can sneak him out of the fortress. Cornered by the Assassins, Oliver wakes in time to order them to stand down. Afterward, Oliver returns to take his place as head of the League, alone. Thea wakes up in her apartment, her mind clear and distraught that Oliver sacrificed himself for her. Oliver renounces his old life, taking on an apprentice role in the League and the name "Al Sah-him" until he is ready to take over as the new Ra's. In flashbacks, Oliver, Maseo, and Tatsu go after the virus, but it is released during a fight.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 3. HTML formatting and reference markers removed. · Content license