Surprise Island

The Alden children, Henry, Jessie, Violet, and Benny, are embarking on a new summer adventure, leaving behind their former boxcar home for their grandfather's private island. Here, they will make a rustic barn their own, transforming it into a comfortable dwelling. As they explore their new surroundings, discovering hidden caves and collecting natural treasures, they encounter Joe, a friendly handyman with a mysterious past.

The siblings work together, using their resourcefulness to create a unique summer life while also uncovering secrets about both the island and their enigmatic new companion. This journey emphasizes the children's independence and their ability to solve the puzzles that arise around them.