ESO Entitat Sobrenatural Oculta (2009)

In a secondary school a group of students Maria Sonia Paula Pol and Esteban form a tightknit bunch Axia a girl obsessed with supernatural issues leaving them mesmerized and included in the group For the 50th anniversary of the center start some work on improving the facilities Laura the tutor of the course offers students a work of the institute history As they investigate they discover that during the Civil War there were tunnels collapsed leaving people buried who were hiding there including several children According to information obtained on the Internet people are buried appear killing Are the ESO Hidden supernatural entities When they decide to enter the tunnel adventure turns into a nightmare