Pretty, intelligent and combative, Yoko Tsuno is an electronics engineer who always remains faithful to her values: loyalty, friendship and respect for life. In this book, a megalomaniac businessman has stolen the artificial typhoon created by Yoko's father and intends to use it as a military weapon. Hundreds of lives are in danger.

There is a volcano in Bali, the Agung, called The Morning of the WorldA" by the locals. And that's where Yoko meets up with her cousin Monya-who couldn't resist the temptation to use her time machine again...

A strange accident at an offshore platform in the Caribbean draws Yoko, Vic and Pol into a new encounter with the Vineans - aliens who have lived underground for thousands of years without the world's knowledge. But Vinean politics are changing; some factions now believe it would be best to return to the surface, share it with the humans. While others are bent on taking it over by force. The young Japanese will have to fight to protect peace.

Yoko responds to a 40 year old SOS During a glider flight training course, Yoko makes a landing near an important telecommunication centre, and there meets a mysterious English Lord. A fortuitous encounter that will propel the young woman and her friends into an incredible adventure her combined skills as a pilot and an electronic engineer make her the ideal candidate for an insane project: land a glider clandestinely inside a crater at the border of China, Russia and Afghanistan."

Yoko, Vic and Pol are back on Vinea after a two-month journey in hibernation. They've barely had time to wake up that the Vineans are already presenting them with disquieting news: plants of extravinean origin have been found in a remote part of the planet, as well as obvious signs of equally alien intelligent life - colossal in size. An expedition is sent to look for these titans...

Yoko and Khany embark on a new quest, this time deep below the surface of Vinea's oceans.