In 2089, while environmental and climatic disasters ravage Earth, a corporation by the name of Chrysalide is promising to ferry humanity to a new world, Eccoh. Nations pitch in to build a gigantic space fortress named the Ark, humanities hope or a better future.
We follow the adventures Baïdir & Nayah, who are brother and sister. On one day Nayah gets kidnapped. Baïdir and his trusty cat, Mushi, chases after Nayah's captor though an energy portal. Exiting the portal Baïdir steps into a mysterious vessel hovering above a foreign world only to be tossed-off the ship and the captor's ship disappearing into the bright horizon, his sister still on board.
Baïdir finds himself lost in this unknown world and sets off with Mushi to save his sister.