Three Crazy Jerks II

In 2043, Frank and Xaver face a singular problem at the patent office, their boss Dr. Kneitz, whose mission is to make their lives miserable. But then an inventor arrives to patent a time machine and they come up with a plan to travel back in time to stop the conceiving of their boss. Accidently, Ronny, a night watchman, happens to be in the room with them when they use the time machine and so, in part unwillingly, the 3 of them travel to the year 1988 in Gran Canaria and they only have a couple of days to stop every interaction with potential fathers for the mother to be.