What plan did Stanley come up with to return to camp green lake?

Stanley Yelnats devised a plan to return to Camp Green Lake after discovering that he was wrongfully convicted of a crime. He intended to find the treasure that his great-great-grandfather had hidden, which he believed would help him clear his name. By following the clues and utilizing his knowledge gained during his time at the camp, Stanley aimed to prove his innocence and reclaim his family's fortune. Ultimately, his determination and resourcefulness led him to succeed in his quest.