The Happy Hollisters at Lizard Cove

The Hollister family's winter vacation to Puerto Rico takes an unexpected turn when a crate of pineapples and an unusual pet arrive at their home. Invited by a childhood friend of Mrs. Hollister, the children soon discover an old tower on the property that holds a clue to a pirate's treasure.

As they search for the hidden riches, they must also contend with two mysterious men trying to stop them, all while experiencing new customs and a different language. The adventure culminates in a thrilling contest for the Pineapple Queen of Puerto Rico.