The renowned physician Prof. Markus Gärtner becomes the new head of the planned cardiac research center. To make it as easy as possible for the specialist to settle into his new place of residence, clinic director Prof. Weissing commissions a relocation agency to take care of his wishes and concerns from now on. Although she sends her best employee, Lina Baumann, she seems to fail because of the gruff, humorless doctor. Every apartment she chooses displeases the single doctor. He is also annoyed by all the joint activities. He only has work on his mind and would like to start immediately.

Divorced, widowed or long-term single: The participants of Flirtkurs 50plus the adult education center feel not yet old, but lonely. From the course, they hope for professional support for their attempts to find a new partner. But what trainer Jan trains with Julia, Frieda, Gila, and Britta, Friedrich, Heinz, and Ulf turns out to be far too mechanical for the individual needs and stories of the students. The course threatens to fail. But then the participants fire the coach and take the initiative themselves.