Lui and Wuck live in the perfect, hermetically sealed world of Isi. Everything is highly technologized and strictly regulated, and questions are unwelcome. One day, when Wuck disappears, Lui begins to ponder. Gradually, he realizes the vile practices on which Isis's power is based. He manages to escape. He sets out in search of Wuck and struggles to survive in a foreign land. Then he finds his friend, but Wuck seems completely changed. Will Lui be able to help him? Together, they continue on, threatened by pursuit and betrayal. As they encounter the strangest characters, the two boys repeatedly receive help and support. But will they also find a new home?.