Graphic novel.Barcelona, Spain. Year 1938. Civil War. City in fire.Small independent group of fighters, who named themselves “Liberators” (EL FALP) have not just humans are involving in the fight, but others who are not really human. There is a reason to suspect those creatures provoke and support the conflict for unknown motive.The leadership of fighters has come to the creatures who they name “Invisible Cloaks” move around the World provoking collisions everywhere. So, Liberators cross the globe for decades in order to find them, then neutralize them somehow.