When lovelorn Michael arrives in Berlin to return a set of keys to his ex-girlfriend, Gabi, as an excuse to see her again, he finds her apartment empty save for a couple of plumbers making repairs to the central heating. Just as Michael learns from the plumber’s apprentice, Harper, that Gabi has popped out for a while but will return soon, the apprentice is attacked by his boss who has unexpectedly and inexplicably transformed into a raging madman. Together, Michael and Harper manage to bundle the crazed plumber out of the apartment and barricade themselves safely inside. Within minutes, they find themselves trapped in apartment block under siege from a horde of similarly insane people, apparently hungry for human flesh.

Wolle and Horse want to help the girl Emma and her grandpa. Verena Winkel from the youth welfare office wants Emma to live in a children's home instead of with her grandpa. Of course, this must be prevented! Wolle builds a time machine with which Emma, Horse and he undertake three adventurous journeys into the past: to the Vikings, to the early 19th century and to the Lapuna Indians.

"Frontalwatte" is like running against a hard wall and falling down softly. Franz, Adrian and Anastasia stumble through a pointless world. They kill time by viewing apartments, jaw operations, incest and poetry slams. Their search for identity becomes a search for the best fitting role.

Hannah and her husband, the insurance agent Reinhard Petzold, initially lead a quiet life in Swabia. However, when daughter Lina goes to Berlin for a weekend and Hannah and Reinhard secretly follow her, this throws the orderly family life into disarray. In Berlin, the couple stumbles from one chaos to the next...