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When young Kaja (Lena Boehncke) is found dead, Andi (Bertram von Boxberg) is questioned by authorities. The two had spent time together along the railroad tracks where Kaja was promised by Andi that he would take her to the place where beautiful butterflies congregate. Andi is told that the girl died of injuries suffered in a fall as the police try to discover if Andi was involved. Peter Franke plays the father, with Uwe Helfrich as the police inspector.