Classic Sci fi film from the 1960s, set in the future of 2000 plus. Basically he gets up in his jet but gets caught in a time rift which sends him from the 60s into the future where the world has been ravaged by a virus, caused by nuclear dust that has damaged the ozone.
Leaving mutant humans on the surface and sterile humans in an underground city. There he meets 3 others scientists that have experienced similar, they plan a return back in time to prevent the damage happening, but when he returns it's not as it was.
Love the empty Airfield scene in the beginning,and the story is excellent,some shaky sets but on the whole a great retro 60s movie