Alyons

When they discover their planet is dying, six tiny alien scientists must race across the Galaxy to Earth to collect DNA for life on their new planet. But their mission is fraught with danger, especially when the crew discover how close they have to get to an enormous and very active volcano. The last time Alyons landed on Earth was in 1494. Have the humans changed much since then? Will the Alyons survive the volcano? Will we survive when an alien race attacks? And, most importantly, did anyone pack any cheese? (back cover blurb).