Elías is a filmmaker that has always dreamt of making a heist film. It was during the summer of 2013 when he finds out a piece of news about the detention of "the Robin Hood of Vallecas", the leader of "the sewer gang". He feels that there could be his chance for fulfilling his dream so he writes a letter to the Robin Hood and send it to the jail where he is imprison. Against all odds, he receives an answer three weeks later. The Robin Hood accepts to meet him. This documentary is the story of a friendship between a film-maker and a burglar, with a sharing goal: a heist film.