When a new kid arrives at school, it looks like Little Monk and Ambrose might finally have made a friend – until their investigative skills threaten to get in the way.

Kids at school – including Ambrose's crush – are being struck by a mysterious rubber ball, and the Monk brothers are on the case.

When money for the school talent show goes missing and two troublemakers are likely suspects, it's up to the Monk brothers to get to the bottom of things.

Ambrose is injured when a branch on the tree he is climbing gives way, and Little Monk suspects foul play.

When an unwelcome guest sneaks into the school talent show without paying, Little Monk and Ambrose attempt to prove his guilt.