Description: While his friends frolic in the lagoon, Quell and Quig capture Mark and take him to the Prime Minister who brings the boy before the Q. Intrigued by the scientific books taken from the United World, the Q has a proposal for Mark. Meanwhile, having seen Mark brought back through town, Helen travels to the tree house to inform her friends of Mark's capture. They are just about to set out after Mark when he returns with a message from the Q Ñ if the kids help him with a "special project", he will make them his "special advisors" granting them their freedom on the island. Mark is eager to help but the others are more cautious, suspecting a trap. Tony and David finally decide it is best they spring whatever trap is being set for them and meet with the Q who tells them what he wants an atomic weapon to protect the island from outsiders. Unable to build such a device, Tony offers to build the next best thing, an Ultra Sonic Laser Ray. Tony creates an impressive looking, but non-functioning, weapon to demonstrate to the Q. With help from the others, and some makeshift explosives, the boys put on an impressive display only to be taken into custody by the Q. David is able to keep the guards at bay with the Laser and they are all able to escape.