Brutal murder on the Loreley. A Japanese businessman is found beheaded. Who is the mysterious killer and why did he take the head as a gruesome trophy? The deceased was still a guest at Jo Weidinger's restaurant the evening before. The young chef is deeply shaken and begins to investigate on his own. But time is running out, as another Japanese person will soon be cold-bloodedly murdered. Apparently, an ancient secret lies behind the gruesome acts, leading Jo all the way to Japan...