Journey into the imagination of a young child as he seeks to protect his treasure from his little sister.

Henry's sister appears to be more than just a little curious about Henry's treasure. In fact, Henry is convinced she is a secret ninja spy sent to steal it. Luckily, he has devised a cunning plan to hide and protect his treasure.

Henry works hard to conceal his treasure in a secret cave and then sets about to protect it with elaborate mazes, booby-traps, and even a ferocious, pink pig. Yet will his plan succeed? Lucy seems to be just as determined to make her way through every defense Henry has constructed.

As readers join Henry and Lucy, they will be exposed to ordinal numbers, and the creativity of Henry's imagination. In addition to this, the story highlights the importance of listening to parental advice, understanding money and the role of financial institutions, getting along with your siblings, and perhaps most importantly - where true treasure within a family really lies.