The day is now seen through the eyes of Charlie Fairhead. Less than thrilled to find out he has to show two new doctors around the department, Charlie is also disillusioned at his 35 years in nursing.

On his way home after his shift, Charlie receives a call from Tess informing him that a major incident has been declared. He heads to the bomb site and gets to work – helping the walking wounded and assessing the situation on the ground. When he heads back to ED, he's faced with chaos. There are not enough staff, there's no surgical lead and they have had to create a temporary mortuary.

Things become worse as the ED is evacuated due to an unattended bag. As everyone else leaves the building, Charlie stays behind and tries to convince one of the bombers, an animal rights activist, to receive critical treatment. He also attempts to convince another activist to give himself up.