The contents of a black briefcase lead us into a superficially well-ordered life in West Germany in 1970, in a city that can be seen as representative of the entire country. In this briefcase: the meticulous documentation of an affair between the small business owner Hans and his secretary Monika.

Time traveler Frank is picked up by Luise and Theo while on their way to Berlin. Frank wants to find author Laura Luna and take her to the future with him. Frank finds Laura and they become a couple, but Luise shows up and makes it a menage a trois.

Two inseparable friends with very different characters come to Munich to study and soon desire the same woman. The more reliable and down-to-earth one marries her and starts a family with her, but the more "exciting" and charming one also arouses her feelings, so that over the years they all suffer from their desires and "deprivations".

What would happen if you gathered all the lovers you have had in your life in a single room and let them interact for a week? For his 60th birthday, a self-absorbed composer, Adam, does just that: he assembles seven of the most influential women from his life and invites them to his seduced lakeside cabin. The guest list includes Adam's current wife Eva, along with their two children who live in Berlin; his gorgeous second wife Lulu, who is an actress; and his down-to-earth first wife-turned-nun Berenice, with whom Adam has an embittered, estranged son Billy, who shows up along with his wife. Also invited are a quartet of women with whom he had often overlapping trysts, including student Marion, sexy Jacqueline, opera singer Lucia, and of course, Lilith.

Germany, 1967. Ruby & Martin, a young couple, are rehearsing their uprising. The price is high: expulsion from school, parental violence, and ultimately institutionalization. But they are ready to take on the cause of love.