disc 1: Falling in love: Semir Zeki and Andreas Bartels; Charles Wysocki, of the Monell Chemical Senses Center; and Louis Monti, of Pherin Pharmaceuticals, talk on topics including the neurochemistry of love, subconscious "love mapping," the vomero-nasal organ, "romance junkies," the stimulating power of dance, and the dynamics of kissing. Experiments that analyze the effects of pheromones, correlate fear with passion, induce bonding through shared confidences, and plot the activation of brain centers in response to visual images of loved ones are featured.

disc 2: Being in love: This program examines the irrepressible nature of love and the consequences of misdirected desire. Monogamy, "lovesickness," stalking, free love, plural marriage, infidelity, mate-switching, jealousy, spouse abuse, and the health benefits of love are discussed by evolutionary psychologist David Buss, clinical psychologist David Celani, social psychologist Arthur Aron, neurobiologist Antonio Damasio, anthropologist Helen Fisher, Robert Levenson, of the Institute of Personality and Social Research, and others. Footage of experiments that measure empathy and that demonstrate bodily changes associated with emotional states is included.

disc 3: Staying in love: In this program, clinical psychologist John Gottman, founder of the Gottman Institute; Robert Levenson, of the Institute of Personality and Social Research; Helen Fisher, author of Anatomy of Love; Pepper Schwarz, coauthor of The Love Test; Pat Love, author of The Truth About Love; and others address numerous aspects of long-term relationships. The biological need for love, the physiological evolution of monogamy, the role of oxytocin in attachment, the dynamics of sexuality, the four-year and seven-year "itches," and the importance of communication are considered. Footage of an actual counseling session at Dr. Gottman's "Love Lab" is featured.