"Los herederos de la Tierra" (The Heirs of the Earth) is a Spanish TV transposition of the work of the writer Ildefonso Maria Falcones where the story of Hugo Llor, a 12 year old boy making his living in the port of Barcelona in 1387,is told. He is under the protection of Arnau Estanyol who was also the leading character of the former work by the same writer "La Catedral del Mar" (The Cathedral of the Sea) aired on TV in 2018. After Arnau's death the plot unfolds,through generations, focusing on the alternate fortunes
of Hugo's friendship and loyalty to Arnau's son Bernat. These were also times influenced by the Holy Inquisition and a few examples of their actions are present in the Series.