The life of Zuzia, whose dad works on the railway, changes massively when Lampo, an extraordinary travelling dog, joins the family. The remarkable shepherd dog, whose train trips are an internet sensation, immediately becomes the best friend of the girl suffering from a heart condition.

For his birthday, eight-year-old Oskar receives a clue about a mysterious treasure hunt left to him by his deceased parents. He immediately hires the best detective he knows: The star of the popular TV series "Detective Bruno". Together, the two embark on a turbulent paper chase and discover far more than just the next clue. A heart-warming family adventure to guess along with!