Help the Leprechaun find his gold!

One Saint Patrick's Day, Leroy left his school happily, and headed to the store to pick up a few things for the parade his family was attending.  On his way home from the store, Leroy found a huge rainbow with a pot of gold down by the pond.  He couldn't wait to go right home and show it to his parents.  However, he crossed a field of three leaf clovers where all his friends were playing.  He stopped and played for a long time and realized it was getting dark, so he left.  

He went to grab his backpack that he left by the tree, and realized his gold was missing!  He must find his gold before he can go home.  Help Leroy!