Back from the 80s

Professor Dr. Douglas Hauser has succeeded: Thanks to him and his ingenious invention, the TimeTraveller 2000, time travel is no longer fiction... How lucky, that the professor has chosen you, the best young researchers in the country, to participate in the first time travel in human history. Well, okay, the whole thing isn't exactly safe. The trip to the past is not a problem, for that the professor has all the theories and formulas together. But unfortunately, his documents for the trip to the future were completely burned in a lightning strike in 1989 and he was not able to reconstruct them to this day... But that's no problem, because that's where you come in! Your mission: You are traveling to the year 1989, rescue the plans for the trip to the future and travel back from the 80s before the lightning strike hits the house! Yes, sometimes it's that simple!