Overview: Duke Bururu is holding a contest with a chocolate castle as the prize. Every chocolate bar is a winner, but the winning message is printed on the white chocolate that's in-between the dark and milk chocolate layers. To win someone would have to lick away both sides of the chocolate to reach the center. Zorori does just that and goes to claim his prize, only to be told he still has to complete an obstacle course to reach and win his castle. Zorori manages to win the castle and set it adrift, only to have it melt in a warmer southern climate. Based on book 6.