As night fell over the East German town of Pössneck on the evening of 14 September 1979, most of the town's citizens were busy getting ready for bed. But not Günter Wetzel. The mason was in his attic, hunched over an old motor-driven sewing machine, desperately working to complete his secret project.

Wetzel and his friend H. Peter Strelzyk and their families had been working on their plan for more than a year and a half, and by now the authorities were looking for them. They were nearly out of time. Wetzel had feigned illness in order to procure five weeks off from work, and during that time he and his friend had collected the materials and laboured over the construction together. This would be their last chance.

Earlier in the day, a strong wind had arisen from the north. These were exactly the conditions that the two families had been waiting for. Around 10:00pm, Wetzel put the finishing touches on the massive patchwork project, then rounded up Strelzyk and prepared to leave. Two hours later the families were en route to a predetermined clearing on a hill by way of automobile and moped. The other components of their project—a steel platform, a homemade gas burner, and a powerful fan—were already packed and ready to go. It was time to attempt the escape.