Third in the fast-paced, action-packed series about two best friends and their amazing adventures. When Lizzie goes to Park World for the weekend with her best friend Charley, she's expecting fun and adventure - but not on another planet! One moment the girls are on a sailing ship ride, the next they're among intergalactic pirates on the Sea of Lapada! Can Lizzie and Charley save the universe from the wicked Weis before the weekend's over? Find out in this action-packed, white-knuckle sequel to Lizzie and Charley Go Shopping and Lizzie and Charley Go to the Movies!