Charlotte Lindholm is on maternity leave and spending time with her five-month-old son David. She doesn't feel fully utilized, and that's why she begins to deal intensively with brain research, especially with human memory. Charlotte's boss, Bitomsky, initially refuses her wish to work part-time. Slowed down a bit by her thirst for action, she agrees to spend her free time with David and Martin in his newly acquired allotment arbor. Right at the beginning of their stay in the 'Erntedank eV' colony, the body was taken away by Albrecht Leimen, chairman of the association. Charlotte immediately senses trouble, especially since the residents of the colony are herseem a bit strange. But Albrecht Leimen - as the new employee in forensic medicine Edgar Strelow finds out - died of natural causes.
The diagnosis was a heart attack while cutting a hedge. This incident happened on a piece of property that he didn't even own and on which nobody lived since its former tenant, Helmut Zacher, emigrated to Canada in the mid-1990s. While Charlotte is making more and more observations that lead her to suspect that something is wrong in the autumnal idyll of the allotment garden, Martin sees this as the pipe dream of an underemployed chief inspector.