神秘的游客到了王宫里面，公主爱丽丝、卢卡斯和他们的朋友去做卧底试探神秘游客。他们将用他们所有的高级侦探技能以及一些非常酷的小工具来解决皇家危机和拯救王国。

With her parents away for the summer, fun-loving, young Princess Alise must spend her time with Queen Uberta, training to be the perfect, proper royal...But what she really wants is to become a swashbuckling pirate! Princess Alise sets sail with Lord Rogers, Jean-Bob the frog and Speed the turtle on a bold, high seas journey filled with amazing adventure, danger and discovery. After a shipwreck leaves the brave crew stranded on a wild, mysterious island, they meet Lucas, a young boy who has been living in seclusion. Now the faithful friends must work together to escape the island and the ferociously hungry creatures that dwell there.