The blind ex-commissioner Alexander Haller will never forget May 12, 2017. It is the day he lost his fiancée Kara and his eyesight in a bomb attack. When a mysterious note appears on a murder victim with exactly this date, his past catches up with him.
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 ...
The violent death of his girlfriend Kara throws Chief Inspector Haller completely off track. Haller himself went blind in the incident and was released from duty. However, inconsistencies cause him to investigate the murder of Kara on his own.