A year-long mystery adventure delivered through real letters.

24 letters. One unforgettable story. A new piece of the mystery delivered every two weeks.

Not another toy.

Not another screen.

A story that arrives for them.

Every two weeks, your child receives a real envelope with their name on it. Inside is the next part of Kai's mystery. A new clue, a new danger, and another reason to keep reading.
Gift The Full Adventure

Hidden Harbour

After the worst storm Kai has ever seen, Benny digs a silver cube out of the sand.

It has no markings. No scratches. No reason to be there.

Then it warms in Kai’s hand.

What begins as a strange discovery near the lighthouse soon pulls Kai, Zara, Ava, Ethan and Benny into a hidden mystery.

There are clues to follow, secrets to uncover, and someone who seems determined to keep the truth buried.

The first adventure has begun.

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