Merlin has asked Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy, in the 1700s. Merlin instructs them to find the painter Tiepolo, and the King of the Jungle to help them on their quest. Will Jack and Annie master magic and be able to rescue the Grand Lady of the Lagoon in time? With the help of some new friends, a research book, and a mysterious rhyme from Merlin, the heroes will save the beautiful city from a flood! Yet another Magic Tree House book that will engage kids with history, magic, and nonstop action from beginning to end.