While exploring the wilderness, Wall-nut encounters the young Mapusaurus prince, who has accidentally fallen through time and landed in Plant Town.

To help the young prince return home, Wall-nut, Peashooter and Bonk Choy travel to the Mapusaurus Kingdom during the Late Cretaceous.

The young prince is shocked to learn that King Mapusaurus has been seriously injured in a battle with Tarbosaurus, leaving his life hanging by a thread.

Meanwhile, the king’s most trusted assistant One-Eye is secretly plotting to seize the throne.

As the prince is still too young to take on such responsibilities, he sets out to seek protection and guidance from the Grand Master.

What adventures await the young prince at the Grand Master’s place?

Will One-Eye’s treacherous plot be uncovered in time?

Open the book now and join the Plants and dinosaurs on this thrilling journey of growth and courage!