The fourth series about Batman's mate Green Arrow is here, who is a billionaire playboy by day and a hooded, bow-wielding vigilante by night. Sounds similar enough to Batman really. Oliver and his lady love Felicity have now left Star City, however an attack from Damien Darhk's gang of assassins leaves Thea and Laurel desperate for Oliver to come back and help them defend the city. Although Diggle certainly isn't keen on that decision...