When a politician’s daughter is kidnapped in the middle of a busy museum, memory researcher Dr. Jasmin Braun is tasked with questioning a group of witnesses. Her value is proved through an interview with the girl’s nanny.

Jasmin interviews Johanna Weiher, a literature student with a tendency towards telling stories, but also a talent for observation. Having extracted valuable information, the police now proceeds to more checks on the museum staff.

The Lebanese guard that is connected to the gang appears to have been in the exhibition room at the time of the kidnapping. Meanwhile, when the police discover that Emma has lost her vital medicine, time is of the essence.

Jasmin helps the mentally unstable Theresa Stern to remember encountering her boyfriend in the museum’s hallway, dressed as a guard. But when Theresa refuses to give up his identity, Jasmin decides to try a different tactic.

While the police search for suspected kidnapper Darius Kempa, Jasmin is convinced to consult renowned psychologist and Darius’ lecturer Max Felsner. Digging into his memories, Jasmin discovers a clue that might lead to Darius.

Darius Kempa continues to be the lead suspect in the case. He finally states that he’ll give himself up and release Emma, but under one condition - that he will be given an explanation for Laura Rohloff’s death 25 years ago.

With Dr. Konrad’s help, Jasmin learns who is the mastermind behind the kidnapping. But as she tries to work out what exactly happened when Laura died, a memory from her own past comes to light and changes what she knew.