Yoko Tsuno, a Japanese-born electronics engineer, travels the world alongside her friends Vic Video and Pol Pitron, becoming involved in adventures where science, mystery, and exploration constantly intertwine. Her investigations take her from secret laboratories and historical sites to unknown technologies and extraterrestrial civilizations, especially the Vineans, a people originating from another planet. Curious, courageous, and deeply respectful of life, Yoko relies on intelligence and dialogue whenever she faces danger. Through journeys on Earth, scientific discoveries, and expeditions into space, the series builds a universe where adventure depends as much on ingenuity as on encounters with other cultures.