Starting from their advanced adulthood, Claire and Sandrine want to cross time and escape it by trying to get younger, but not like in commercial ads, more by learning again how to tame the learning process. Those codes and rules that us, grown-ups, teach to kids to make them assimilate our values, our conventions and how to live together. Those codes that make us modelling clay within a system that recognize us and validate us. Language and body learning that allow to be one body, one society, one culture, at least when you’ve learned your lesson well, precisely. Nature or Culture being the question base and childhood a playground and, why not, challenge our standards ?