[1] The show focuses around a fictional high school in Cologne and tackles with young love, a marriage crisis, a mysterious disappearance, schemes and competition fights, coming out, drug abuse, career chances and forbidden feelings.
Hand aufs Herz started two weeks after the failed daily drama Eine wie keine aired its final episode due to low ratings.
The sports coach turns out to be Bea's former schoolmate Alexandra Lohmann (Verena Mundhenke), who holds Beate responsible for the mysterious disappearance of her sister.
After a first long day of work, Beate spends the evening at a club called "Chulo’s" with her best friend Miriam (Caroline Maria Frier), the wife of her brother Piet (Oliver Petszokat).
The protagonist was without a doubt Vanessa Jung in her part as teacher Bea Vogel, who had a forbidden love affair with her student, Ben Bergmann, played by Christopher Kohn.
While Sebastian Hölz as Julian Götting, Verena Mundhenke as Alexandra Lohmann and Dennis Schigiol as Hotte Horstfeld left the series early, others were added to the main cast.
Most important newcomers through the series were Lucy Scherer as Jenny Hartmann, who was involved in a popular lesbian storyline with Emma Müller, played by Kasia Borek, and Kim-Sarah Brandts as Michael's wife Helena.