Instructions
Get to the "Section 2" goal in "Book 4" to find the first goal to help you get to Volcano Island. You must walk your Sim over the ancient pier and have him inspect it by pressing the "A" button.
Press the "A" button when you are prompted to build a canoe. To successfully build the canoe, you must have 50 pieces of softwood, 20 pieces of bamboo, 10 pieces of rope, an axe and five body points.
Complete the tutorial to build the canoe using the motions on your Wii remote. Press the "Z" button once the canoe is finished to jump in it.
Select the "Explore" option by pressing the "A" button. Watch the cutscene that shows your Sims traveling to the third and last island. Skip the cutscene by pressing the "C" button.
Press the "Z" button to get out of the canoe. You will find the next Lost Book, called "The Biscuit Isles."