Alfie is just a baby when he moves in with his forever family. As he grows up, his parents, Tiffany and Felix Bagley, wish for another child to provide Alfie with a brother. To distract his family from the social worker's constant knockbacks, Felix decides to buy their first home.

The house is dilapidated, and Felix and Tiffany set about carrying out vital repairs while Alfie is left to play in the garden and the spectacular treehouse. It is here he finds his first treasure and a note from the previous owner's daughter, Amelia. Alfie's goal is to discover what lies at the end of the treasure trail and solve the puzzle of Amelia's father's disappearance. With the help of Hilda, the kindly old lady who lives next door, and a peculiar boy who is delivered to their house by a woman who resembles a witch, he embarks on a turbulent journey.

Soon, he is compelled to fight dragons, knights, and an evil pirate to rescue a Queen and all those he loves.

This book may be enjoyed by the young at heart of all ages.