When a lethal virus of unknown origin breaks out in Grant, Massachusetts, a group of hospital volunteers including wealthy Susannah, romantic Will, ambitious Kate, and scheming Callie find themselves caught in the middle of the chaos

Under an ominous black sky, the rain falls in torrents. The once tranquil Revere River swells sending the people of Grant, Massachusetts heading for higher ground—and Med Center. As flood victims pour into the hospital, the staff and volunteers dive into the life-and-death action. Original.

When an oil refinery bursts into flames, Med Center becomes a disaster center with swarms of patients suffering from burns, smoke inhalation, and other injuries.

After a serious explosion occurs in the chemistry lab at Grant University, the wounded are rushed to Med Center. Sam and Will put their own lives at risk when they volunteer to help rescue six people trapped in the rubble. Original.

When Grant, Massachusetts, is hit with an ice storm, the slick roads lead to car accidents, and a flurry of victims are brought to Med Center.

In Grant, Massachusetts, dozens of people are showing up at Med Center with bizarre symptoms—some are even on the verge of death. And no one knows why this is happening—no one but Patsy Keene, a vengeful Registered Nurse who works in the ER.