When Homer Pudding receives a mysterious note emblazoned with the letters L.O.S.T., he knows the moment he has been waiting for has arrived. It is time to meet the society of Legends, Objects, Secrets, and Treasures, take his Uncle's place, and become a true adventurer.

With his best friend, Dog, at his side, everything seems to be going as planned...until an unexpected opponent challenges Homer's spot, and they are tasked with a dangerous quest. Only the one who can solve the clues and reach the treasure first will be given membership.

Homer is counting on Dog's hidden ability to smell treasure to help him along the way -- but someone is trying to hinder his quest and keep him out of L.O.S.T. And who is plotting to steal Dog? From the sleepy goat fields of Milkydale to fantastical mansions and hidden islands, Dog and Homer are off on another page-turning adventure!