While visiting her friend Ingrid in Koln, Yoko finds herself thrust in the middle of a mystery when a young Japanese woman is attacked in the cathedral, and whispers a few words before passing out - notably 'Rheingold', the German name of a Wagner opera. Having decided to investigate, Yoko finds signs that the victim had probably set an explosive charge somewhere, and discovers that 'Rheingold' is also the name of... a very special train!

During a new visit to Vinea, Yoko returns to the Archangels' underwater city, drawn there by a mysterious probe and its damaged robot pilot, Myna. The latter is soon repaired, and immediately informs Yoko that the High Council of Vinea has decided to destroy the wandering space city of Kifa, as it threatens to crash into the planet. But Kifa is where Myna and her robotic people were exiled long ago. Yoko and her friend decide to help them...

Yoko, Vic and Pol are in Switzerland, testing a new civilian jet plane. At the end of their contract, they suddenly find out that they've unknowingly been preparing a mission for Japanese Intelligence. During World War Two, the Imperial Army had tested a colossal cannon, that was later thought destroyed - but massive calibre shells have now been delivered to an arms trafficker in a small Asian country. It's up to Yoko to locate the terrible weapon...

Travelling to Hong Kong to visit the Chinese branch of her family, Yoko is attacked by a massive, lizard-like creature. She finds a string of scientific clues and evidence, but as the pragmatic electronics engineer's investigation progresses, the trail leads her to a mysterious little girl-and a sense of wonder that will change her life forever.

On one of the moons of their stellar system, the Vineans have detected a mysterious light source that only appears every five years. Its point of origin matches the location of an ancient depot where every dangerous industrial, chemical and radioactive waste ever produced on Vinea was once stockpiled. Having no idea what the light could be, but worried of the destructive potential present on Ixo, Khany puts together an expedition - and brings along her favourite Human consultants...

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 is off on an intergalactic journey this time! One night, on an isolated moor, Yoko, Vic and Pol are eagerly waiting for their friend Khany. When she arrives, she whisks them away on a shuttle and takes them not to one of the Vineans' underground facilities, but to a station near Saturn. And that's only the first leg of their journey! They're soon invited to travel much, much further: the Vineans have decided to return to their planet, to see if it survived the cataclysm that drove them into exile.

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 returns to the alien world underneath our own. 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.

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. Her meddling with the past has caused a sacred dancer to be sentenced to death. To save the young woman and make things right, Yoko will have to travel back to 1350 AD and face the terrifying flying demons of the Agung...

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 volume, 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. Yoko and Aoki, her teacher, eventually manage to neutralise the typhoon, but Aoki has to sacrifice himself in the process.

While driving on a road in Scotland, Yoko barely manages to miss a girl who is absolutely hysterical and being followed by a pack of dogs... The girl, Cecilia, is an orphan who lives in a genuine Scottish castle. Yoko and her friends soon realize that oddities surround the girl. A mysterious castle, ghosts... A whiff of the supernatural floats around the young Scotswoman... Will she be the victim of an odious conspiracy? Intelligent, courageous and pretty, Yoko Tsuno is an electronics engineer. This specialization draws her and her friends Pol and Vic into adventures that cross the line between fantasy and science fiction.

Back in Borneo, where she grew up, Yoko Tsuno visits some favorite temple ruins and sees a strange machine materialize nearby. Out climbs a young girl with a startling message: She is from the 39th century and has come on a mission to save humanity from destruction ... Intelligent, courageous and pretty, Yoko Tsuno is an electronics engineer. This specialization draws her and her friends Pol and Vic into adventures that cross the line between fantasy and science fiction. Yoko travels the globe through time and space, but no matter where her exploits take her, the young girl never forgets values such as loyalty, friendship and respect for life.

When Ingrid, Yoko's organist friend, invites her to a German castle, what are the chances it's merely for a concert? Among a collection of ancient instruments she is there to authenticate, Ingrid found a strange, technologically advanced device. It belonged to a physicist whose final work was, supposedly, a so-called 'death ray'. Trouble soon follows, and to prevent a mysterious gang from stealing the horrific technology, Yoko and her friends may have no choice but... to use it.

Travelling down the Rhine, Yoko and her friends save a young stranger from drowning. Sensing foul play, the young Japanese girl decides to stay with her new friend Ingrid and investigate the unusual circumstances. There, amidst the beautiful castles of the Rhine Valley, she will face a danger straight out of the Renaissance and battle the devil himself to the sound of his own monstrous pipe organ.

When a suspended animation pod with a child inside washes ashore on an isolated island of Vinea, Khany is dispatched to investigate - and takes Yoko along with her. The trail leads Khany to a strange tower that emerges from the water at regular intervals. But by the time Yoko follows suit, Khany has disappeared, the tower begins to sink again, and a mysterious, angel-faced Vinean is about to be shot by men who appeared from beneath the waves.