Das Vanship-Rennen geht in die alles entscheidende Phase. Klaus und Lavie haben es mit großer Mühe geschafft nahe an der Spitze zu bleiben. Während die beiden verbissen um den Sieg kämpfen, begeben sich Tatiana und Alister auf eine geheime Mission.
Claus and Lavie progress in the endurance race, but Dio and Lucciola continue to challenge them. Duke Henry Knowles raises the bid price on the Exile artifact, spurring interest among the other auction participants. As Alex attempts to outbid the others, Guild Maestro Delphine Eraclea challenges him and finally raises the bid price to 50 billion Claudia, at which point one of Knowles's men puts a gun at the back of Alex's head, threatening him not to continue bidding. On their final pit stop, Tatiana and Alister pick up a cargo of explosive charges for their mission. When the auction ends, Duke Knowles takes Alex outside and reveals that he wants to avenge the death of his son, captain of the Goliath. Claus and Lavie pull ahead of Dio and Lucciola in the final lap after only filling part of their fuel tank at the last pit stop to lighten the vanship and win the race. At precisely midnight, the explosive charges dropped by Tatiana and Alister destroy Horizon Cave's power generators, leaving it in darkness. Seizing the opportunity, Alex kills Knowles's men and escapes. When the artifact is taken to Delphine, it is discovered to be fake. The true artifact of Exile is revealed to be a Mysterion, one of four phrases with corresponding answers that will reveal the secret of Exile. Graf, the butler of House Hamilton, entrusts Alvis and the Mysterion to Alex. After the race, Lavie tells Claus that she does not want to fly in a fighter vanship but will continue to serve as his mechanic. Claus understands her decision and makes a promise that they will fly together again to cross the Grand Stream. Dio and Lucciola, who are able to see in the darkness, offer to tow Claus and Lavie out of Horizon Cave to the Silvana.
La course se poursuit. Claus et Lavie sont bien placés mais harcelés par Dio et Lucciola. Tatiana et Alistair poursuivent la mission confiée par Alex pendant que ce dernier participe aux enchères mettant en vente un objet lié à l'Exile.
ホライゾンケイブ・8時間耐久レースは佳境に入ってゆく。一方、闇のオークション会場では…。
Claus y Lavie progresan en la carrera de resistencia, pero Dio y Lucciola continúan desafiándolos. El duque Henry Knowles aumenta el precio de oferta del artefacto Exile, lo que genera interés entre los demás participantes de la subasta. Mientras Alex intenta superar a los demás, la maestra del gremio Delphine Eraclea lo desafía y finalmente aumenta el precio de la oferta a 50 mil millones de Claudia, momento en el que uno de los hombres de Knowles pone un arma en la parte posterior de la cabeza de Alex, amenazándolo con que no continúe pujando. En su última parada en boxes, Tatiana y Alister recogen un cargamento de cargas explosivas para su misión. Cuando termina la subasta, Duke Knowles lleva a Alex afuera y le revela que quiere vengar la muerte de su hijo, el capitán del Goliat. Claus y Lavie se adelantan a Dio y Lucciola en la última vuelta después de llenar solo una parte del tanque de combustible en la última parada en boxes para aligerar la furgoneta y ganar la carrera.
