The Apostrophe Posse

Trouble comes to Tea Tree Bend…

In cowboy movies the sheriff forms a posse to round up all
the bad guys. Cam and Ellie from Daisy Cottage and their friends Billy and
Louisa have formed a different posse. Their mission is to find and fix all
the signs in Tea Tree Bend with missing apostrophes. The summer holidays are
almost over so they have just nine days to complete their task.

How can doing the right thing go so wrong?