The boys plotted their big surprise on the girls in true scout fashion. There was no real secret in the fact that the Camp Fire Girls of Hiawatha Institute were planning a big event, but girl-like they affected secrecy to stimulate interest. The result was more than could have been expected, although the girls did not realize this until after it was all over. The curiosity of the Spring Lake boys was thoroughly alive as soon as they learned of a mysterious "something big" going on at the institute. True to the character of real scouts they delegated emissaries, commonly denominated spies, to visit the stronghold of the Camp Fire Girls, get all the details of their plans discoverable and report back to headquarters. Greater success than that which rewarded their efforts could hardly have been wished for. Half a dozen boys went and returned and then put their heads and their reports together with the result that the Scouts of the school had all the information they needed.