Minnie Goetze is a 15-year-old aspiring comic-book artist, coming of age in the haze of the 1970s in San Francisco. Insatiably curious about the world around her, Minnie is a pretty typical teenage girl. Oh, except that she’s sleeping with her mother’s boyfriend.

The film follows the journey of Kitty, the imaginary friend to whom Anne Frank dedicated her diary. A fiery teenager, Kitty wakes up in the near future in Anne Frank’s house in Amsterdam and embarks on a journey to find Anne, who she believes is still alive, in today’s Europe. While the young girl is shocked by the modern world, she also comes across Anne’s legacy.

Concert pianist Henry Orient (Peter Sellers) is trying to have an affair with a married woman, Stella Dunnworthy (Paula Prentiss), while two teenage private-school girls, Valerie Boyd (Tippy Walker) and Marian Gilbert (Merrie Spaeth), stalk him and write their fantasies about him in a diary. Orient’s paranoia leads him to believe that the two girls, who seem to pop up everywhere he goes, are spies sent by the husband of his would-be mistress. When Val’s mother, Isabel Boyd (Angela Lansbury), finds their diary, she suspects that Henry has acted inappropriately with her daughter. She contacts Orient and they end up having an affair. Val finds out about it, as does her dad.

This is the story of teenage girl Steph, who is brought up by her fiery aunt Jude after her pregnant mother Jass and Vietnamese father are killed in a car crash. The arrival of her late mother’s diary reveals the colorful, sexy secrets of Jude and the foreman Alan that allow Steph to reinvent her vision of the world.

After the death of her husband, the mother of Julie, Jack, Sue and Tom begins to suffer from a mysterious illness. Aware that she is going to have to go into hospital she opens a bank account for the children, so that they can be financially self-sufficient and will be able to avoid being taken into care by the authorities. Unfortunately she also dies and Julie and Jack (the older, teenage children) decide to hide her body in the basement so that they can have free reign of their household. Soon Tom has taken to dressing as a girl whilst Sue has become increasingly reticent, confiding only to her diary, meanwhile Jack and Julie sense an attraction developing for each other. However Julie’s new beau, Derek, threatens to unearth the many dark secrets within this family as he becomes increasingly suspicious of Jack.