Mirabelle and the Picnic Pranks

When Mirabelle plays too many pranks and isn' t allowed at her parents' picnic party, she has a brilliant idea: she' ll take a shrinking potion, so she' ll be too tiny for anyone to see! But Mirabelle discovers that the garden is a little more dangerous when you' re no taller than a blade of grass. Has the mischief gone too far this time . . . ?