When the kids wind up on an island after a fierce storm, Huck finds himself in the role of Gulliver to the small people of Lilliput. Needing a big protector for their community, the king forces him into a vow of marriage to his daughter hoping he'll be their permanent guardian. But will a lovesick Lilliputian and a new threat to the island be too much for him to handle?

In Ireland, Becky meets a group of Leprechauns who have trouble hiding their prescious magic shillelagh, the source of all their power. When gypsies seek this power and kidnap Tom and Huck in the process, Becky must work with the Leprechauns to keep the shillelagh out of the wrong hands and save the boys from peril.

In an African jungle, Tom is stung by a poisonous plant and it's up to Huck and Becky to find an antidote for him. Though they find a trade ship that has the medicine, it holds a secret that may lead to doom for all three kids if they don't act in time to save Tom.