Marcelino Sanz de Sautuola y de la Pedrueca, in 1868, accidentally discovered Paleolithic paintings with the help of a hunter named Modesto Cubillas inside Altamira's caves, located in Cantabria, north to Spain. Trying to expose their discovery to the academic world for that they study the paintings, Sautuola crashed against the skepticism and discredit of all experts, who claimed that the caves were false and the paintings made for the own Sautuola, in a effort to get rich. Looking for the truth, Sautuola was the rest of his life fighting to prove that those paintings were real, trying to restore his innocence from the accusations of falsehood launched against him.
Felipe just wanted peace, to enjoy his July vacation away from school and, his classmates, and their cruel nicknames about his weight. The problem is that his mother decides to host Caio, his neighbor and former friend, for fifteen days. Caio, who is now a annoying teenager, brings out Felipe's insecurities. Over time, Felipe's resentment toward his neighbor turns into friendsh...