The SV2 are hosts to the young Prince of Oasis, a Middle Eastern country rich in oil. The prince is here to observe how the Patrol Labors work, and hopes to set up something similar in his own country. The prince's presence ruffles a few feathers at the SV2, but the Prince soon takes a shine to Noa and Alphonse, and a friendship soon develops between the two of them. Meanwhile someone has stolen one of the captured Brocken Labors from the Tokyo Port Tunnel case. Could this be connected to the prince's arrival? Is someone out to harm the prince?