Joanna Lander is a medical researcher specializing in Near Death Experiences (NDEs) and how the brain constructs them. Her partner in this endeavor is Richard Wright, a single-minded scientist who induces NDEs in healthy people by injecting a compound that tricks the brain into thinking it's dying. Joanna and Richard team up and try to find test subjects whose ability to report their experiences objectively hasn't been wrecked by reading the books of pop-psychologist and hospital gadabout Maurice Mandrake. Mandrake has gained fame and fortune by convincing people that they can expect light, warmth, and welcoming loved ones once they die. Joanna and Richard try to quantify NDEs in more scientific terms, a frustrating exercise to say the least.