The American architect Kracklite arrives in Italy, supervising an exhibiton for a French architect, Boullée, famous for his oval structures. Tirelessly dedicated to the project, Kracklite's marriage quickly dissolves along with his health.

A former astronaut helps a government agent and a police detective track the source of mysterious alien pod spores, filled with lethal flesh-dissolving acid, to a South American coffee plantation controlled by alien pod clones.

A concentration camp survivor discovers her former torturer and lover working as a porter at a hotel in postwar Vienna. When the couple attempt to re-create their sadomasochistic relationship, his former SS comrades begin to stalk them.