Topher's mother arrives in the ER with life-threatening symptoms. As her condition deteriorates, the team works furiously to save her before it's too late. Drew and Shannon treat a gravely injured foster mom and while Drew bonds with the scared young foster daughter, the team discovers the mother has a secret. Meanwhile, Jordan and Scott treat a patient with a rare condition and when an important piece of equipment needed for his treatment fails, Jordan must enlist the help of TC's new girlfriend Jessica whose company makes the machine.