The Algorithm Academy: Book One, The Thirteenth Step

Welcome to The Algorithm Academy—where big problems are just little problems wearing a trench coat.

Eleven-year-old Nila Rahman loves fixing broken things. But when she discovers a mysterious envelope hidden inside an old radio, she is drawn down a spiraling staircase behind a library vending machine and into a secret underground school for young inventors.

Alongside her newly formed team—Teo the fearless builder, Pip the pattern-finder, and Sam the rule-following logician—Nila finds herself at the heart of the Academys ancient timepiece: The Orrery. When the Academys systems start malfunctioning in strange, reversed patterns, Nila and her friends realize someone is deliberately sabotaging the school from the inside.

With a strict Town Board Inspector looming, a countdown ticking down to zero, and a mysterious helper leaving coded messages marked with //, Team Ladybug must use logic, debugging, and teamwork to save the Academy before it closes forever.

Perfect for curious minds, future programmers, and anyone who has ever broken something while trying to fix it—and tried again anyway.