Jenny Becker is happy; she and prosecutor Biederkopf are finally a couple. However, their relationship is put to the test when Biederkopf suddenly disappears, leaves a sick note, and sends a mysterious text message. Even his friend Erich Öhler cannot provide any clues about his whereabouts. Jenny is worried and unofficially investigates with her colleagues Sascha and Logo. When she uncovers inconsistencies in Biederkopf's past and Erich Öhler is murdered, her unease turns into concern. Jenny and her team work under intense pressure on a case that reaches far back into the past and connects circles from the biker scene to the BKA and the Office for the Protection of the Constitution. Ultimately, Jenny herself finds herself in grave danger.