In a sequence celebrating British children 's literature during the opening ceremony of the London 2012 Olympic Games , a group of over thirty Mary Poppinses with umbrellas descended en masse to fight and defeat the nightmares ( the villains Queen of Hearts , Captain Hook , Cruella de Vil , and Lord Voldemort ) haunting children 's dreams . The sequence is called " Second to the right and straight on till morning "
opening ceremony
2012 Summer Olympics opening ceremony
Mary Poppins (character)