Jana doubts Christian's loyalty after finding a blonde hair. Her suspicions grow as she secretly checks his devices and follows him, uncovering nothing until she searches his car and discovers a secret that shakes her to the core.

Jana decided against a career in medical research in Munich and in favor of a life as a doctor and at the side of her great love Christian in his hometown of Husum. While Christian takes care of large construction projects as a project developer, Jana runs her own practice and ensures the family a good income. Her life seems perfect: her marriage is still passionate even after many years, she is involved in her daughter Lotta's school and is always there when she is needed. Jana is a woman people trust. Christian's old friends have also become her friends. But one morning, when Jana notices a long blond hair on her husband's scarf, everything changes: Suddenly she begins to doubt Christian's loyalty, but is unable to confront her husband with her suspicions. Their sovereignty is eroding day by day and distrust takes hold like a malignant boil. Jana throws all her principles overboard, secretly checks Christian's cell phone and his e-mails, follows him after work and finds: Nothing. Only when she finally searches his car does Jana discover a secret, the extent of which shakes her to the core.—Degeto