The Treasure of Lemon Brown the explanation to the question is In the beginning, Greg was just a normal boy not being able to perform well at school and fearing the lecture by his father wanting to know why he couldn't play basket ball. When he was locked by his father in the room after getting a complaint from his school due to his low grades and effort in math class. Greg decided to go to the warehouse where he met Mr. Lemon meaning he would talk to him once he saw him. The story of Mr. lemon moved Greg and made him realize the importance of his father and the love of family he decided He go back home and the idea of getting lectured by the father actually makes him happy and or excited to see his father again, knowing he just wants the best for his son.
At the beginning of the story, Greg Ridley didn't care about his father's feelings and only thought about his own feelings. He didn't want to head home because of his father's lectures and he wasn't allowed to play ball with the Scorpions due to his failing grade in Mathematics. When he met Mr. Lemon Brown inside the graffiti-scarred building, he soon started to realize that his father acted that way because he loves him and he was his treasure. Greg changed his behavior because he found out what happened to Mr. Brown and his wife and son. This taught Greg that his real treasure was his father and that he was his father's treasure too. Thus, he changed his mind and went back home even though he knew the lecture he was going to get. It also taught him that he was lucky enough to have his dad around supporting him.
He was free from the isolation and corruption of the island, and since he died innocently, the boys figured that he shall float away from the insanity.
