Kai, a young boy, living in 1923 Berlin tries to convince an American businessman that he can market his chewing gum better than anyone else in town.
Even the military academy can't stop kind-hearted officer Gottfried Engelhardt from seeing the world through rose-colored glasses. Everything in the young GDR is blooming: Engelhardt's career, the socialist state, the black market, and maybe even a chance at love.
The criminalist Hannes Bergemann tries to blackmail the city where he spent his youth. After many years returning to the familiar places of his childhood, he hopes to meet again his old friends, especially Fred, Helmuth and Richard, with whom he had a close childhood friendship. When confronted with a murder shortly after his arrival and given the task of investigating it, he has the painful experience that his friends are involved in the case.
