The Last Days of Lemuria. The Gods of Space and Time, #3

Her life changes on that day that Elisabeth Trundle life meets two attractive young men in The Great Library of London, but these guys are not Earthlings. Elisabeth has been dreaming about the lost continent of Lemuria ever since she was a child. But the last thing she expected is that she would actually get an opportunity to go there. And that would never have happened if the chronometer of a passing spaceship had not malfunctioned.
Accompanied by four Yumi Masters, Elisabeth's dream comes true and she ends up in a civilisation that is about to be destroyed by a natural catastrophe. The first person they meet is a seven-year-old boy who has been accused of a crime that he didn't commit. And over the next two weeks, they have to train an army, defeat the high priest at his own game and save Jatoo's life. But it's not all bad news, the people are wonderful, and the food is even better.
Before the dreaded day dawns, they discover how the Lemurians intend to survive.