When the space shuttle Sila V takes off for the far reaches of the Solar System, it does so with the wrong crew: twelve teenagers.. The boys and girls, selected by WASA (the future NASA) to promote the Lunae 2 mission, come from twelve different countries and have very different social backgrounds. Faced with the impossibility of turning around, and during the two years of the trip, they will have to live in a framework of isolation and multiple difficulties, such as the demands of a hard training, the low gravity or the unknown reasons of their unexpected take-off. At a certain point, the twelve have split up. Six remain in the Solar System and the other six end up through a wormhole on a planet in the star Fomalhaut (“Whale’s Mouth” in Arabic), an extraordinary place that hides the secrets of the civilisation that created the egg ship: the Tubulars. In their attempt to undo what happened, the two groups go through experiences that will affect the future of humanity.