In the Bear in the Big Blue House book Raiders of the Lost Cheese, adventurous Ojo and Sir Tutter discover something mysterious and exciting in Atticania -- a treasure map. Tutter recognizes the initials on the map (T.T.T.) as those of his great-grandfather, Tutterly T. Tutter, and the map leads to his treasure --- the great lost cheese. Pretty soon, everyone joins in the fun to help Tutter find this legendary cheese.