"A 'space-flight for tourists' on the shuttle, Atlantis, enters a time-warp. It returns to Earth several generations later. But the world has changed--for the better. Find out how--when Magnus Growthe, Max Proffit and Mal Sayer meet Imagin, a woman from the 21st century, who tells them about the wonderful social, cultural and environmental changes that have taken place since their mysterious disappearance--to help mankind along his/her path of all round personal growth, social evolution and spiritual development"--Page 4 of cover.