Merlí, a charismatic and unconventional high school philosophy teacher, guides his students through the complexities of life, love, and identity. Along the way, he tackles topics such as teenage crushes, sexuality, jealousy, coming out, and rebellion. Set in Barcelona, Spain, the series explores the personal journeys and relationships of the students as they navigate the challenges of adolescence and discover their true selves.

David Martos works undercover to exhume an uncatalogued Civil War mass grave where he believes his family may be buried, based on the seemingly delusional stories his grandfather told him.

Sabaté lives in exile in France, but since the end of the Spanish Civil War he has never stopped making forays into Spain in an attempt to overthrow fascism in the only way he knows and considers effective: direct action. This journey, structured like a road-movie with a hint of western, highlights the fears of four characters and Sabaté, their past, their regrets and questions about their cause and the violence, uncovering the ghosts of the past of all these characters in a fast-paced adventure where both sides show that they are fine adversaries.