This film is very, very funny. It's one of a very small number of films I've seen more than twice. I'love it. It begins in the future in a german patent office. An inventor has developed a machine that makes it possible to travel through the time. Frank and Xaver (employees at the office) want to use this possibility to avoid the siring of there bad boss what has happened on the canarian islands in summer 1988 to get rid of him. They use the time machine and due to some circumstances Michael Winslow happens to join them on their trip. They find the lady they assume to be the mother of their boss quickly and follow her. She's of course one of the most beautiful women and everybody wants to have her what makes it nearly impossible for our friends to find out who might be the one to "make" her boss. They undergo many adventures to finally change the future..... They take care for the wrong woman. Michael Winslow meets the future Mother while separated from the others and does not get to be in the right place when their time on the canarians is over. He'll be the father of there bad (and now colored and as funny as his (well known) father) boss.
Review by Bernhard Doebler from the Internet Movie Database.