Samantha Hannum is the kind of experienced, calm-under-fire paramedic you'd want if you were badly injured, but the crises and threats she faces each day have begun to erode her compassion and will. She's lost all sense of purpose, a dilemma that is affecting the relationships with her family, friends and the people she serves. Samantha and her rookie partner stumble onto a plot to distribute contaminated medicine. Their discovery puts the medics in grave danger and tests the limits of their cunning and loyalty. Set against the backdrop of a gang war and a violent protest against a local abortion clinic, it's difficult at times for the partners to know if there is an actual plot against them or if they're simply in the wrong place at the wrong time. Samantha's world is brutal and unpredictable, but it is also a place where strangers care for others in the most extraordinary conditions. To triumph--and survive--Samantha must find a way to rekindle the humanity she believes she has lost.