A psychologist is sent to a space station orbiting a planet called Solaris to investigate the death of a doctor and the mental problems of cosmonauts on the station. He soon discovers that the water on the planet is a type of brain which brings out repressed memories and obsessions.

An intimate study of one of the most influential and provocative thinkers of the 20th century tracking feminist icon Susan Sontag’s seminal, life-changing moments through archival materials, accounts from friends, family, colleagues, and lovers, as well as her own words, as read by Patricia Clarkson.