Gwen and her boyfriend Adam stumble into an open relationship. However, the light-hearted experiment gradually turns into a flurry of jealousy and unforeseen feelings. As their relationship is put under more and more pressure, Gwen has to face a familiar fear: of being alone.
| Actor | Role |
|---|---|
| SSina GenschelGwen | Gwen |
 Julius NitschkoffAdam | Adam |
 Paul AhrensSebastian | Sebastian |
| IIman TekleNina | Nina |
| JJudith StrößenreuterMaureen | Maureen |
 Annabelle MandengRini | Rini |
| LLaila KohlerAlicia | Alicia |
 Jannik MühlenwegPaul | Paul |
| EElie KempfenAndré | André |
 Simon MorzéJulian | Julian |
 Andreas AnkeMartin | Martin |
 Maximilian DiehleMarcel | Marcel |
| AAnnabel Charlotte HertweckMeike | Meike |
 Hartmut VolleLothar | Lothar |
| UUrsula BerlinghofMoni | Moni |
| MMirabelle KalfonHelene | Helene |
| SSophie ArbeiterFriend | Friend |
| JJenny GroßFriend | Friend |