The Teen Titans travel to London for a Command Performance at which they will meet Queen Elizabeth II. On a sightseeing tour, Robin becomes accidentally locked in the Tower of London, leaving Kid Flash, Aqualad, and Wonder Girl to retrieve the Queen’s royal sceptre, stolen by the Mad Mod, without the Boy Wonder’s aid. Their costumes gimmicked by the Mod so as to halve their super-powers, the Titans are unable to stop the villain, until the ruse is discovered and they change uniforms. Then Aqualad rescues an escaping Mod from drowning, while Kid Flash and Wonder Girl defeat his henchmen, and the sceptre is returned to the Royal Family.