What events led charlie to find the golden ticket

One afternoon while walking home from school, however, he spots a dollar bill lying forgotten and partially buried in the snow. He looks around to make sure no one is searching for it, but when no one seems concerned, he decides to take it to buy food. He decides he will spend ten cents on just one single candy bar, and bring the rest home to his family.

He goes to the store and buys a Whipple Scrumptious Fudgemallow Delight bar, then gobbles it up as soon as he gets it. As he goes to take his nine dimes of change, he realizes that it would not make too much of a difference to buy just one more because the first tasted so good. He does, and begins to tear off the wrapper, but is distracted by a flash of gold beneath it: a Golden Ticket.