The blind former chief inspector Alexander Haller has experience with kidnappings. This time he is in an unfamiliar position: His sister Sophie was kidnapped while visiting the theater with Niko. The assumption that it is about 50,000 euros, which Haller's private driver owes the betting mafia, turns out to be the wrong track. The hostage takers are asking for 750,000 euros and seem to be well informed about the Hallers ...