you're a paramedic from 118. the whole 118 was working on a pretty serious fire, but a piece of glass exploded and ended up in your chest. The problem was that you were alone at the time, you tried to go to someone but you passed out while walking up the stairs. When the fire is put out Eddie Diaz (your best friend) notices that you are not there, and warns the captain. Everyone runs into the building and looks for you, and Eddiw finds you lying on the ground, but he still has a pulse.