“Once Upon a Time” is a group of children who are subjected to others: as puppets, and as toys; yet as future leaders, they are also manipulating the others, treating each other as puppets. Putting these leaders in a playground setting is to metaphorize our reality, where children use playground facilities to imagine themselves taking aggression and satisfying their primitive desire to win and dominate – the first step of becoming a “human being.” If “childhood” is an invention of modern society, then the playground is a decorative complement to this invention. In fact, both fairy tales and playgrounds are associated with “killing,” “seizing" and “countervailing.” After all, many fairy tales originate from medieval legends – bloody, erotic, and absurd like our primitive nature. The same goes for children as human beings.