In the quiet Spanish countryside of the 1870s, amateur archaeologist Antonio Banderas makes a discovery that threatens to shatter the very foundations of religious and scientific thought. His young daughter, Maria, stumbles upon ancient, vibrant paintings of bison deep within the Altamira cave, artworks that suggest humanity’s artistic spirit flourished far earlier than anyone believed. As Antonio Banderas fights to authenticate these prehistoric masterpieces, he finds himself caught between the scorn of the scientific elite, led by a skeptical Rupert Everett, and the fierce opposition of the Catholic Church, which views the cave’s age as a direct challenge to doctrine. With his passionate wife Golshifteh Farahani by his side, he must navigate a storm of public ridicule and private doubt, risking his family’s reputation and his own sanity to defend a truth written on stone walls. This gripping historical drama, directed by Hugh Hudson, explores the profound personal cost of a revelation that dared to rewrite human history.