Fat is beauty!, her mother said; but Petra didn’t like the image in the mirror. She wanted to be tall, thin and elegant, and she decided to move heaven and earth in order to get it… till she met Fortunato… Petra is a little elephant who rejects her fatness and dreams of being physically different. After using up all her expectations with frustrated intents of slimming through methods that didn’t adapt to her species, and full of illusion of finding a solution to what she considers a problem, Petra sets out on a trip which leads to a special meeting, amusing adventures and, above all, makes her aware of herself, to accept her natural condition and not to have a distorted perception of fatness.