A bus linking Manresa and Barcelona airport has been hijacked. The assailants empty the accounts of the passengers through their mobile banking apps.

The perfect heist ends in carnage. When the police arrive, inside the vehicle there are three bodies and six witnesses. Missing is a tenth passenger who apparently shot at the robbers and fled. "He saved our lives," witnesses say. He must pay for the triple crime, police demand. The case goes viral and public opinion sides with the vigilante. It is what we want to give the viewer, to reach the limit of certain situations, says director David Victori.