The man with the green mask

Mats knows one thing: he will go and find his friends, even if it means traveling to the moon. Where he is going, the moon is not that far away. Woetoemba? Is this a place or a village? A very special village, somewhere near the Milky Way where the Woetezen live in a colony of spaceships, or are they UFOs? Kwantum and Nanda, flash bracelets, moving in time and space? Mats is convinced that he will soon wake up from a very strange dream. Surprisingly enough, it is not a dream, but what is it then? Can he save his kidnapped friends all by himself and free Ximinas, the great leader of the Woetezen? Will help come from an unexpected corner? More importantly, is he brave enough to complete the difficult task?
One thing I know for sure: this story will take you to the wonderful world between the stars where aliens live.
Scary, exciting; incredible science fiction!