Changing jobs and changing boyfriends - until now, the beautiful Sonia has cheated her way through life. She found the support she needed with her sister Karin. But then Karin doesn't return from a supposed business trip. Sonia sets off with her dog Bigfoot in search of her sister. The first clue leads to an internet chat room where Karin regularly logged in under her alias Demi Moore and indulged in provocative sex talk.
| Actor | Role |
|---|---|
 Katja WoywoodSonia Miebach | Sonia Miebach |
 Peter SattmannTilmann 'Valentino' | Tilmann 'Valentino' |
 Paul FrielinghausHerr Ungers | Herr Ungers |
 Benjamin SadlerJosef | Josef |
| ZZsolt BácsMax Wolff | Max Wolff |
| RRagna PitollKarin Miebach | Karin Miebach |
 Angelika MilsterGreta Garbo | Greta Garbo |
 Axel PapePolizist | Polizist |
 Katja RiemannAnna | Anna |
 Aykut KayacıkPizzeriainhaber Ali | Pizzeriainhaber Ali |
 Solveig MüllerBlumenverkäuferin | Blumenverkäuferin |
 Anton RattingerMitarbeiter | Mitarbeiter |