Train driver Anne Heim drives for Nordwestbahn on one of the most unpunctual routes in the entire north. On the journey to Osnabrück, there's also a police operation. At Hanover Central Station, Günther Wollschläger can hardly breathe. The track supervisor has to ensure that trains depart on time. But a stretch of track is closed due to people on the tracks. In Bad Pyrmont, the express track-rebuilding train "Mammut" suddenly has to stop. It's supposed to replace sleepers, but the warning system is causing problems.